The one person I knew who did this was a bit of an odd duck socially, but aside from their characters all being pretty bland and samey, they really were harmless. They kept their head down, played their characters in the game, and stayed in their own lane.

They did like to collect actual props from the movies the actor was in, which someone tried to namedrop them here about like it was some big deal, but people shut that down pretty quick. Frankly I don't care how someone spends their money if it's not hurting anyone. It's a bit obsessive but then so is blowing $500 on pins or Funko pops or gacha games. I guess it was the fact somehow those are more socially acceptable for a bunch of nerds smashing barbies to approve of than to spend $500 on an actor's coat or whatever that made people think it was alright to try and make fun of them.