@HowardTayler why would you do that?
The whole point of federation (once they activate it) is that you can chat/follow without having to create a new account on each service.
Like, if you already have a personal email, do you also sign up for Outlook, Gmail, etc?
Signing up a new account at Threads is pointless. You should use your current Fediverse account and interact via federation. (When they add it, of course)
@sgryphon dunno whether actual federation compatibility is coming. With billionaires in charge of both bluesky and threads, I have doubts.