All the ban does is stop kids from having accounts, if the service allows anonymous usage then they can still find somewhere to doom scroll. My teen son has been blocked from Snapchat, and was this evening doom scrolling on Tik Tok until I blocked it on our home network.
I'm curious to understand why your approach to TikTok is banning it. Why do you think this is the right solution? Are you concerned at all about your son's ability to cope independently from oversight and control?