(Tankies) are able to bend reality itself

That's an incredibly tortured way to say "Every time I go online to debunk them, the facts always seem to be on their side".

They will either deny it, at which point they disagree with Stalin which means that he did, in fact, do things which were not right, which is inconsistent with what they believe in,

I feel like a vampire looking at someone trying to wave a cross at me, wondering what effect they thought this was gonna have. This is the kind of hilarious misunderstanding of a culture that could only have been written by someone with a pith hat and multiple opium pipes.