TikTok has a very efficient algorithm which rapidly tunes to your personal interests. If you only see screaming and cringy repetitive videos beyond the first 15 minutes of use, you've got nobody to blame but yourself. For example, my personal feed is for a large part educational content, and I don't think I have seen any person under 16-17 since I first started using it.

It's still probably a net negative on society, but I definitely consider Facebook, Twitter, and Instagram to be far worse. TikTok is getting a bad reputation solely because of its Chinese origin, while its Western counterparts are doing exactly the same thing.