The TYPICAL behaviour when you hit "share" on any platform is not to immediately share. It TYPICALLY gives you options to share to a variety of other sources, both public and private. It also generates a link if you want to grab the link and specifically share that.
That is the TYPICAL share behaviour. If what META is doing with their new app is obscuring this typical behaviour and a "share" click directly going to the public, that would violate the defacto behaviour users are accustomed to when using the share button.
That is the TYPICAL share behaviour. If what META is doing with their new app is obscuring this typical behaviour and a "share" click directly going to the public, that would violate the defacto behaviour users are accustomed to when using the share button.