I remember discovering Beavis and Butthead in the 90s and showing it to my parents, and their being more confused than offended by the short (for the time) and scattered 15-minute episodes. I'm pretty sure if you went back 50 years and showed TikTok to people who were used to things like Columbo and Loveboat, they'd just be confused and wonder what the point is.

If anything, I'd say the people who enjoy absorbing entertainment in 7-second chunks have been reprogrammed and desensitized in a way that's not normal, though I wouldn't slap any psych labels on them either.