> but many seem to think it's justified - different thing
Literally no one thinks that. Look at the last election in Russia.
There were like 10 pro-Putin pro-war parties and one pro-Putin maybe-we-a-lil-bit-try-to-stop-the-war joke party. And that last party was banned from participating because of copyright infringement (they used fonts from Microsoft).
That indicates that actions were taken to usurp absolute power, not that there is 0% support.
People there, from young age live with constant repetition of same soviet style messaging: “west is conniving and bad (and don’t forget - rotten); we won WW2; USSR was best in the world at X, Y, Z; Kiev Rus Vikings; inheritors of eastern Rome something…”.
Those messages are indistinguishable part of national (almost personal) pride, even for a lot of russian speaking people that currently live outside of Russia.
(If I would be raised in muslim family, I would be muslim; if I would be raised in russian info space, most likely I would support 3day operation to save Russian people from fashists)