I’m 50, and on my computer an awful lot. I use Reddit/Lemmy/X/Mastodon but that is about it social media wise. No Facebook/Insta/Tiktok/etc. I also haven’t had cable/satellite TV in 25+ years, so perhaps not typical for someone my age.

My dad is almost 80 and has zero interest in social media/tv. He’ll watch the occasional YouTube video about something sciencey or about whatever project he’s working on, and might catch a movie on my plex server or a DVD from his small collection once a month or two.

I do see others my age (or his) glued to social media, but from my very limited data set I don’t think it’s some age related brain rot that will get us all.