Anyone signing up for a new Meta account isn’t going to be suddenly surprised at how invasive it is. The people who signed up for Threads obviously don’t give a shit about privacy, as much as I’d like to think otherwise.
I’ve had this conversation many times, and they always say something like “I have nothing to hide, so I don’t care”, to which I respond with “I have to hide, either, but nothing I want to share. Since you have nothing to hide and you don’t care, what’s your bank account number, tax ID number, credentials, etc. etc. I won’t use it for anything bad, promise.”
They still don’t get it…
I’ve had some success by asking them to unlock their phone and give it to me so I can read their messages and look at their photos. As they refuse, I tell them “but you just said you’ve got nothing to hide and you don’t care?”