Don’t even have to be that old to experience that. There’s this weird phenomenon where if you’re born at the tail end of the 90s, anyone born 2000 onward feels infinitely younger, even if the actual age difference is only a few years.
I was born 1998 and I still look at anybody born in 2000 like “you’ve gotta be 12 years old max.”
The day I added a GameCube to my retro setup was the day I accepted everyone gets old eventually.