As a not quite middle aged dude, I only just now figured out how to see magic eye stuff. I tried a couple times in elementary school but didn’t get it so I stopped. Had a few drinks earlier, stumbled on some magic eye pic that I could see clear as day and it blew my mind a little
FWIW, I can see them and am probably some level of ADHD or autistic. I would have expected the correlation to be the other way around to be honest, i.e. more neurodiverse folks can see magic eye images than neurotypicals, but our two data points aren’t enough to say one way or the other, only that maybe neurodiversity has nothing to do with the ability after all.