How would you feel about it?
Let’s pretend lemmy just got a sick ass video hosting feature for this example.
I would be skeptical that it wouldn’t become a dumpster fire overnight.
I have no interest in short form video no matter how sick-ass. So I’d ignore it, and if that weren’t possible I’d leave.
There’s no hard limit on the number of people you can block in Lemmy (unlike the alien site which assumes only 1,000 assholes exist in the world). If the TikTok-ers mostly come from one instance, defederation would be swift. Barring that, I would just engineer a solution since my instance runs a lot of custom frontned/backend components already.
TL;DR: I’d notice it long enough to get annoyed, but it would be an easily solvable problem.
I’d make heavy use of the block feature. Then probably leave eventually
I’d probably jump ship. The dynamic that exists on TikTok is not something I have any interest in participating in. And that’s entirely putting aside the massive user privacy issues.