This is not a bug, but a feature. Tiktok operates on the behest of the Chinese Communist Party (CCP).
There's much evidence for this. See, for example, a study by the Network Contagion Research Institute and Rutgers University (pdf).
The report details how TikTok, owned by the Chinese-based ByteDance, amplifies and suppresses content based on whether it aligns with the geopolitical interest of the CCP.
The CCP's interest is, among others, to destroy democracy. It is supporting Germany's AfD -e.g., we saw several AfD staff arrested in Germany over suspicion of spying for China last year, and AfD head Alice Weidel has strong ties with China, she is fluent in Mandarin and lived in the country- as well as other right-wing politicians in Europe with Tiktok being a major tool for this.
As one report from July 2024 says:
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Germany’s huge TikTok market is vulnerable to extremists’ tactics, which have gained major traction with young voters. Our cross-border investigation proved that you can easily buy virality on social networks.
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In Romania, reporters showed that the social network was a key platform for emerging far-right political figures.
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Similarly, in Poland, the TikTok champions of the European Parliament elections were the far-right, who are now heading to Brussels.
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In Slovakia, TikTok served as a fertile ground for conspiracies about the attempted assassination of Prime Minister Robert Fico.
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Meanwhile, in the Czech Republic, reporters found that the platform’s algorithm was pushing users into a bubble of disinformation.
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Estonians were exposed to fear-mongering related to war that was propagated through TikTok.
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In Hungary, Russian narratives flow to TikTok via public media.
It's time that Europe awakens. The Chinese government's dictatorial policy isn't good for the Chinese people, and neither for Europeans.
There are people who are literally waiting for this. We can see this on Tiktok and all other platforms (including here on Lemmy). There is a community waiting for its propaganda and then just spreading it as long as it fits to certain narratives, no matter what bs this may be ("Ukraine started the war", "Covid is a hoax", "China is a democracy" - the list of these braindead claims is endless).