Well of course they aren't genocide deniers. You can't deny something that never happened. Also note that they did not deny being Tankies - they denied being Fascists. Tankies don't recognize themselves as Fascists and will vehemently deny that they are. Here's another phrase for Tankie for the uninformed: Red Fascist

Here is one of the Lemmy devs denying that the Uyghur genocide in China is happening:

https://old.reddit.com/r/MapPorn/comments/xq49ct/deleted_by_user/iq954mu/

The Uyghur genocide is as real as white genocide. - Source

Here they are again denying it:

https://old.reddit.com/r/MapPorn/comments/xq49ct/deleted_by_user/iq951cv/

The holocaust was a genocide that actually happened, with all the evidence that goes along with it. There is no Uyghur genocide.

Do you believe in anything as soon as the word "genocide" gets attached to it? What about "white genocide"? Are you a white genocide denier? - Source

And just so nobody can deny that parentis_shotgun is a Lemmy dev: - "I'm one of the devs of Lemmy"

Direct links to the posts will not work but still exist on the user's profile page: https://old.reddit.com/user/parentis_shotgun/ - hold PgDn until comments stop loading then Control+F. In fact feel free to peruse their history in general - it's quite interesting.

One of my favorite posts is their defense of the government of North Korea in /r/AskTankies: https://old.reddit.com/r/asktankies/comments/tb1836/okay_but_dprk_seriously/i04d1wu/

Now ask yourself why would someone who is not a Red Fascist Tankie piece of shit be answering questions on behalf of Tankies in /r/AskTankies while defending a totalitarian regime? Is it... perhaps because they're in support of such a regime because they are in fact a Tankie piece of shit?

They also lied about the "single user on Mastadon not providing sources". They did provide sources. The source were things said straight out of the dev's mouth.

Let's play a game of spot the difference between fascists (nazis) and fascists (tankies).

Nazis: Fascists who are directly responsible for the deaths of an estimated 12,000,000 people. Deny a genocide ever took place despite evidence to the contrary (Holocaust). Antisemites who forced minority ethnic groups to work in forced concentration and labor camps and starved them to death. These concentration camps began in 1933 and ended in 1945 lasting for a period of 12~ years. Had a secret police known as the Geheime Staatspolizei (Gestapo) whose job it was largely to suppress political opposition by any means necessary including execution of dissenters and spy on behalf of the Nazi party. Torture and execution were common - including that of women and children.

Tankies: Fascists who are directly responsible for the deaths an estimated 26,000,000 people. Deny multiple different genocides ever took place despite evidence to the contrary (Holodomor being the most well known). Antisemites who forced minority ethnic groups to work in forced concentration and labor camps and starved them to death. This Gulag network of death prisons began in 1919 and only ended after Stalin's death in 1953 lasting for a period of 34~ years. Had a secret police known as the Чека (Cheka) whose job it was to suppress political opposition by any means necessary including execution of dissenters and spy on behalf of the State. Torture and execution were common - including that of women and children.