The author's concerns would mostly all be ameliorated by logging out of TikTok and never logging back in. They seem to think that "TikTok" and "Society" are synonyms. They are not.
i don't think it's unreasonable, particularly when she qualifies gen-z, to conflate tiktok and society.
it's really out of hand. the brain rot, beyond just the psych labeling she touches on, is crazy.
50% users under 30 (gen z). only counts 18-30, estimate as you will for those under 18 (to be fair she only referenced gen z): https://explodingtopics.com/blog/tiktok-demographics
total users in US is 170M: https://backlinko.com/tiktok-users
your call on if 85M users 18-30 is "[gen z] society".
Especially with children and teenagers - which is why labeling them early can be so bad (or good, if used sparingly).