Stalinism and the USSR in general, through all its –isms and different eras lasted much longer and was much more thorough in uprooting the 'old ways'. Let’s not count total bodies for the Reich and USSR or Mao China. Let’s only count military and police officers, mayors, teachers, people of the system in general executed or otherwise replaced by imprisonment, forced deportation, demotion, etc. Kulaks, factory owners. I actually don’t know the numbers, so cue real historians here.
These are life-changing experiences for the people that lived through them and they still affect their heirs morally and legally today, maybe even more than the war itself.
The Nazis were in charge of the show alright, but they pretty much let the same (kind of) people run the machines.
That, I think, is why in the former USSR and many ex-WP aligned countries there is widespread and very strong anti- and pro-Stalinist political rhetoric, much more so than pro-Nazi. Mostly because the ideology is not only not shunned, but also proudly inherited from parents and grandparents who ‘had it good’ back then and got a lot out of the regime.
Not only that, but Russia’s military and foreign policy vector is pretty much the same since before the existence of the USSR. So yes, some countries need to counterbalance obvious attempts by Moscow at tilting their political landscape in her favor by using the 'good old times' as a talking point. Resorting to Nazi rhetoric is pathetic though.
But this is going too much towards politics. Here’s a historical Soviet joke:
Nixon asks Khrushchev ‘Why do you have political prisoners in the USSR?’
‘Why do you beat your negroes?’, Khrushchev replies.
Edit: feel free to punish me for my gross oversimplifications with a public lashing of purge-victim counts, etc.
