Going by their playlists and their interests, at a conservative estimate this person is in their mid-twenties but more likely in the 30-40s bracket.
My guess would be early 40s.
They are manchild. But they're definitely of a vintage where they were exposed to things like Liquid Television, Ren & Stimpy, Beavis & Butthead, and games like Splatterhouse.
That puts them at an age where they were old enough to be exposed to these things and old enough to remember them, meaning they would have been about 10 years old in 1995, which would make them about 38 now.
Bet this removed actually does support animal cruelty because it's "Sooooooooooo kewl!" Why are the idiot masses such worthless piles of filth? Are they proud to be satan incarnate?
Why is he pretending to oppose something he agrees with?