Nobody believes Russians these days. For good reason. Have you forgotten all the lies served by Putin in the run-up to the invasion? Those weren't "clever ruses", those were lies as crude as those of a preschooler who has just discovered that you can say counterfactual things. They kill Russians: yes, that's what happens in a war. There has been a war for eight years.

Nothing you wrote is the tiniest evidence that they are nazis, completely besides the point.

Doesn't change the fact though that they certainly are self-identifying Nazi, in a sad perversion of "the enemy of the enemy is my friend"

Perhaps they are falling to the same misperception you seem to fall to, equating nazism with "against Russia". Tell that to a Frenchman, tell that to a Pole. Tell that to a Jew of any nationality. No, actual Nazism was not "against Russians". That wasn't part of their identity at all. Actual Nazis literally didn't give a shit about Russians in specific, they just wanted the land and the people currently on it happened to be Russians. But they would have tried exactly the same on any other ethnicity.