I don’t think I’m missing any point. Have you used it? They’re owned by the same company. Threads is separate but part of Instagram. Other than the user name being reserved on Threads in case the Instagram user wants to sign up, there isn’t an account created. If you try to search the name of any of those accounts in Threads it doesn’t come up at all. (Edit: mistyped a word)
Ah the beauty of TST… Laid a trap and some moron took the bait. I’m sure they had to do it because “persecution” or something like that.