I think in general these aspirations shouldn't be shat on, but young adults with these aspirations should probably be gently guided in more realistic directions.
I've noticed that many of these girls are college students and the money from their admirers is useful to buy clothes, gadgets and to take their boyfriends to fancy vacations.
So as long as you are aware this is a bubble you will be doing fine.
With Tiktok, Youtube and the like, the comparison gets even worse when you compare the abyss of money making vs. value produced..
Definitely wouldn't let my kids anywhere near it.
If, in the chat app, you create literature, you're creating literature. Some people are, most people aren't. If, on tiktok, you create interesting short films, you're creating interesting short films. Some people are, most people aren't.
To sum up, I agree with you that "doing tiktok" is like using a chat app, and agree with you that it's not necessarily educational. I disagree that it's necessarily not educational.