@davidrevoy I'm wondering

Currently Instagram is a closed place: if you don't have an account you can't really browse the user's content

That's one thing Elon tried to do with his toy in the last few days, and users weren't happy

For Threads, you need an Instagram account, but is content will be available for everyone, or just for registered users?

Twitter users may will just migrate from a proprietary closed place to another one, Mastodon and Fediverse may not be really impacted by them...