He's co-opting the red army's defeat of Nazi Germany for his own popularity purposes. Which is impressive, considering he's also disavowing communism. It would hardly have been possible, if it weren't for fringe (but not fringe enough) movements in Eastern Europe playing along with it. Not because they're pro-Russian, far from it, but because their old nationalist groups often were aligned with the nazis, and they want to rehabilitate them. Putin and these groups totally agree that the conflict should be framed as being between Russia and these groups.
This is dangerously naive. Propagandists like Putin don't need real grievances, they're happy to invent grievances and brainwash the population into believing them. In light of this fact, there's zero downside and nonzero upside to decouple from Russia (at least for any state which intends to remain independent) which makes it a no-brainer.
Or maybe you accept that you are human too, vulnerable to the same thing, and maybe you are the brainwashed one, but you don't care?
Going down either of these roads ends you up with the neonazis in the long run (and yes, Russia has a lot of them too).
So no, it's not naive to point out the good points that feed the propaganda. What's naive is to think that dictators can manufacture good propaganda out of thin air anyway so it doesn't matter what "our side" is guilty of.
Putin is a gangster, not a cult leader. He's in it for himself, the people around him are in it for themselves. No one thinks he's selfless, least of all regular Russian people. It takes effort to keep something like that together. Unfortunately, he gets help from his foreign enemies.
No, I don't read that at all. There's plenty of Russian propaganda that Westerners have fallen for hook, line, and sinker, chief among them the idea that all Russian speakers are actually Russian and want to be a part of the Russia.
The point is that the propagandists don't need to base their propaganda on truth. A salient historical example here is actually World War II: the Germans tried to provoke Poland into overreacting and causing a major incident in Danzig to justify their invasion of Poland. The Poles refused to play ball, so when the appointed hour came, the Germans made up some atrocity and used it as the basis of the declaration of war, faking the evidence early in the invasion. Given that Russia has already used a similar pretext regarding Russian speakers in Ukraine, it's not a surprise that the Baltics are nervous about Russia doing the exact some thing with regards to Russian speakers in their territories.
Oh yeah, other westerners, but not you. You take the foreign policy think tank line that Russians actually want to be balkanized. Just after saying that Putin has succeeded in brainwashing the population to go along with whatever he wants without need for excuses based on good points.
Or, to use an analogy with a different language, Putin's argument is akin to saying that a majority of Irishman want to be a part of England, because they speak English.
Don't confuse language for cultural identity.
(And, FWIW, I have fallen for this propaganda in the past; I've just been successfully educated since then as to why the simplistic linguistic map is fundamentally the wrong way to look at the conflict.)
Ironically, this war will probably end up doing more to truly hammer out a single cohesive Ukrainian nation out of all the ethnic Russians in Ukraine than all the efforts of Ukrainian nationalists before it - assuming that Russia loses the war, that is.
More importantly, though, it can only be effectively applied on Russian territory, while real grievances among minority Russian populations in other countries can be exploited into fifth-columnizing them.