Old farts with nostalgia for USSR are the backbone of Putin's support, his core electorate. No one who wants free Ukraine would go around LARPing as a soviet. That's the demographic where I would expect to find most collaborators. Just another unfortunate result of shared history.
"The Great Patriotic War" is mostly a Russian concept, for everyone else it's a WWII. Cult of Victory around "The Great Patriotic War" has been one of the main avenues for brainwashing and propagating militaristic zealotry in Russia for a while now. It's not about learning lessons to avoid repeating horrors of the past, but fetishizing Russian exceptionalism and the war itself.
Collaborators can perform all kinds of roles, assisting occupying forces is kind of the point here. One of the things Russia does in the occupied areas is cutting off media access to the rest of Ukraine to broadcast their own propaganda, in order to brainwash whoever remains, and to further feed delusions of people like this lady to foster loyalty. Dunno about you, but in this part of the world museums like this are run by local administration, meaning she's an administration worker.
You can see Russian flag on the photo as well, smack down in the middle. Footage is from Ria Novosty by the way, Russian state-owned media. I'm sure if we watch the whole thing we'll see a lot of interesting stuff that would melt your disingenuous bullshit argument. But why go through all the effort while we already know that you're full of shit?
