That has nothing to do with Russia vs Russian conquered territories, besides, France has Occitan, there is the German based dialects, Catalan, some Basque and a whole raft of others.
> Since they held absolute political powers nobody was even there to question it.
Except that that didn't quite happen in the way you suggest. You could make a similar statement about Fries in NL or maybe Limburgs or Diets. And it would be just as much wrong.
> Compared to that, Russians have super great attitude towards southwestern Russian variety. They do recognize the existence of Ukrainian language (dialect continuum) and that some people might want to speak it unharmed, for starters.
Sorry, are we on different planets or something? You mean: those very same Russians that are currently bombing the shit out of anything Ukrainian and who wish to eradicate the Ukrainian nation and culture?
> I'm also pretty sure that Germans from different parts of Germany aren't big fans of each other as a group.
They are as alike as the Dutch and the Belgians, we joke about each other but at the end of the day there is no hate and zero chance of a war.