FYI: "[...] the new #Instagram text app will have an element of #decentralization as well. “Soon, our app will be compatible with certain other apps like #Mastodon [...] Users on these other apps will be able to search for, follow and interact with your profile and content if you’re public, or if you’re private and approve them as followers.” (Presumably that compatibility will come through #ActivityPub, which #Meta has been exploring alongside other tech companies.)"

https://www.theverge.com/2023/5/19/23730070/instagram-twitter-app-competitor-leak