I find the trope in cartoons of adults just casually being friends with children they're not related to or working with (Mr. Dink from Doug as the most obvious example, Gazpacho from Chowder if you want to talk within the average profile poster's nostalgia range) really cute. I can kinda understand why people would find the idea off-putting, but the whole thing is relatable to me since as a kid most of my school friends were teens and as a teen most of my school friends were kids.
I've noticed that all of the DMCA'd videos (that I found, at least) were all from one channel, which seems to be how Nintendo usually handles this stuff (targeting one channel), so I'd check up on your favorite video game OST reuploaders. Make sure they're doing OK.