Like I can't think of any analogous place in physical space I'd let my kids hang out unsupervised, and the amount of time I intend to spend watching (supervising) them scrolling Insta or TikTok on anything like a regular basis is zero, and the likelihood of their choosing that as a thing they want to do if I'm otherwise available to do something fun with them is also probably somewhere around zero, which means... no social, since it ain't happening supervised.
Like I also wouldn't take them to a bad part of town and leave them there for hours. Why would I do the digital equivalent? Even if we talk about it afterward... why? Maybe occasionally as a "here's how to spot shit" lesson but not enough that they'd need an account or anything.