I have to say they provided a lot of links and were unable to show anything relevant so i was tempted just to assume they're crazy but I try not to base anything on crazy people even negatives so I looked it up
Looking at TikTok creator ages, figures are skewed towards a younger demographic. Young adults (18-24 years) make up over half of the creators (52.83%). While under 18s make up a comparatively low 27.47%
I don't know how accurate these are but the article said they're sourced from tiktok
A lot of people want a big bad to blame for everything and tiktok is it for a lot of people, but yeah I don't really think their claim is correct