Exactly. And once those ones are established: Why not have all discussions there; not just the ones where you explicitly want to hide something (for whatever dubious or legit reason).
Yes, indeed, as far as I understood younger people, they'd definitely do a lot of "very smart things" (tm) before they get the idea that one can indeed exchange email addresses via tiktok. Guess what: It's not solely for emojies! :-p Theoretically - although no one ever did - you _could_ exchange useful information there as well.