Age has someting to do with it? I'm 36. Does that matter?
So you don't like Ace Rimmer riding an Alligator from space??
Don't worry it won't be permanent, but Ray has some of the best avatars ever, and most if not are all animated. ie sledgehammer hitting ground. An old user, Mod something-or-other
used to have many entertaining ones, and Jeremy Clarck's face moving around was infinitely more distracting, but still worth seeing.
If it really bugs you, install adblock, right click, and block it. You will never have to be so distracted, and it would have taken less time than complaining about something so trivial in an online forum.