Why do I feel like so many people here support the USSR and the CCP?

Because most people here actually study the subject instead of relying on false narratives of the Western media.

Again, don’t get me wrong I don’t think the west is immune from any of this (and in fact I think there is a lack of criticism of the west), but anyone who claims the west is evil while simultaneously glorifying countries that implement concentration camps comes off as fascistic and ignorant.

You say that the West is not immune from any of the stuff you've mentioned, but your narrative relies on the falsehoods created by Western media. By doing this, you are uncritically glorifying the Western narrative and ignoring how these countries understand the issues you've mentioned. For instance, this is a list of countries which approve or disapprove of China's Xinjiang policies:

Notice how the countries which disapprove is basically countries traditionally associated with Western hegemony. It's the basically the Always the Same Map meme incarnated. The countries which approve of China's Xinjiang policies includes countries with a Muslim majority. Do a research on why China adopted the re-education programs in the first place.

Xinjiang was filled with terrorist attacks by Islamic extremists, and they were hurting the Uyghur population in the process. China's policies of re-education actually reduced the terrorist attacks and protected the Uyghur people. The Western narrative calls them "concentration camps", but they are places with schools, art and dancing classes, where the Uyghur culture is actually promoted. They also learn about the country's laws and ethical conduct. The people who are admitted to these centres are associated with extremism, and therefore they are restricted of movement, but once they go through the process of education, they are free and even receive incentive from the government to create their own shops and businesses.

This is a quote from the document created by the Organization of Islamic Cooperation:

Having considered the Report of the Secretary-General on the Situation of Muslim Communities and Minorities (Document No. OIC/CFM-46/2018/MM/SG.REP): (...)

Welcomes the outcomes of the visit conducted by the General Secretariat's delegation upon invitation from the People's Republic of China; commends the efforts of the People's Republic of China in providing care to its Muslim citizens; and looks forward to further cooperation between the OIC and the People's Republic of China.

This is only an example of how your narrative is filled with Western narratives, falsehoods and outright propaganda. You call yourself an anarchist, but you parrot very obediently your government's narrative on China and the USSR. To go against the Western narrative is to research and inquiry objectively what these countries are doing, instead of relying on what you see on Western media (which includes Reddit, Twitter, Facebook, etc.).

People here on Lemmy and Lemmygrad reject these views because most people here actually STUDY and RESEARCH on those topics. What about you? What sources do you use for your claims? Let's check:

• Wikipedia

From 2001 to 2010, 80% of edits on Wikipedia were made by 1% of editors/writers. It's far from the "decentralized peer-produce" ideal that it markets itself as. Various analysis on the source of these edits have found that their IPs are linked to several US state organizations, such as the CIA, New York Police Department, along with government and corporate interests. There is even a company which offers Wikipedia edits, and they are hired by several corporate industries, including Facebook and billionaire groups which hire PR firms to whitewash certain articles. They have arbitrarily removed a community-elected member of Wikimedia and at the same time raised to the position of CEO and executive director (2019–2021) of Wikimedia Foundation a person called Katherine Maher, which had links to the US State Department and several corporate interests, such as HSBC bank, and has shady background in the Middle East. More info on her here. You can see why a country would ban the Wikimedia Foundation.

• ASIA MEDIA

According to its own website:

ASIA MEDIA (and later ASIA PACIFIC ARTS) arose in 1998 from the nonprofit Asia Pacific Media Network (APMN) at the University of California, Los Angeles. It was created by founder Tom Plate, then a fulltime Adjunct Professor in Communication Studies and in Policy Studies, and by his UCLA students.

Interesting how Asia media is located in Los Angeles, California, United States of America.

• The Independent

According to the Independent itself, it is associated with liberalism:

In fact, The Independent always shared some of Mr Blair’s political blend of social and economic liberalism, but, true to our approach, we could never unconditionally endorse him or his party.

There will be an obvious bias towards countries which do not follow liberal (bourgeois) democracy, and therefore, you should never expect it to have an objective portrayal of China.

In conclusion

but anyone who claims the west is evil while simultaneously glorifying countries that implement concentration camps comes off as fascistic and ignorant.

By glorifying the narratives of Western imperialist countries, your "anarchism" comes off as fascistic and ignorant. The fact that you repudiate China's sovereignty over Taiwan is an example of this. The only reason Taiwan suddenly became an issue after 2010's is because the US has interests over the island and manipulate the people through their propaganda machine to make them believe they are fighting for a just cause, over "democracy" and "human rights". The United States of America has killed millions of people under the banner of "democracy" and "human rights". Don't be fooled by that.