Yeah, and most of those media advances, when consumed for as many hours per day as tik tok is, will have a huge negative impact on a person.
I would say the same about someone watching that much TV, and do think the same of myself when I used to play video games that much. It's pleasurable and feels good, but for long term mental health (not to mention physical) it's catastrophic.
I'm not talking about hopping on and watching 15 mins of tik tok in the evening, but that's not how it's usually consumed