TFR has a very inexplicable bias against liberalism and Europe.
The cause might be as innocent as the fact that making interesting "normal" content for liberalism and Europe wouldn't be all that easy. Think democratic Britain and USA in vanilla, not exactly a thrill to play, especially if WW2 wouldn't happen.
It's one thing that Russia is so absurdly powerful (It was generally expected that Russia would be capable of what it does in TFR before 2022)
I think it's a widely known fact among the players that Russia simply can't win in any realistic scenario ingame (it's just pure math, though 1EW might be closer than one would think), so to avoid a mod where Russia loses both wars every time, they have to give it unrealistic power, be it ridiculous buffs or magical troops appearing out of thin air. Related to that is that Sweden and Finland have been banned from participating in the 1EW since a Russian AI (and most players I imagine) simply could not deal with all that additional frontline.
It's sadly just how the game works. Of course I'm sure with great effort the cheating could be avoided, and still have a halfway competent Russia, but I for one wouldn't trust the AI to do that.
The EU's peace treaty against Russia is represented as some kind of grave injustice that requires Russia to go to war against Europe
Again I reckon this is either out of necessity or the devs writing themselves into a corner. For whatever reason (probably for interesting gameplay), TFR has decided that the 2EW
absolutely must happen, so they have to make it happen one way or another. Honestly, it would be more interesting if there were even one or two paths where the 2EW doesn't happen, I don't think it would really break anything if the conditions are right. Maybe like you said, Europe winning 1EW and Navalny coming to power might be the perfect setup for a post-1EW peace, or at least no all-out war.
Not arguing against the Russian bias, but I think much of that can be explained with gameplay necessities.