I think you're underestimating the draw of para-social relationships. That's what powers the "social media" part of TikTok. I think it would be disingenous to suggest that TikTok is anything other than social media.
I will agree if I'm in the minority on this one, but it confirms my larger point - "social media" isn't a useful term. If some apps are putting our youth at risk, tell us what those apps are. Give a top three. Help everyone out.