it was possible to disable up to android 9 or so (required root) but nowadays it basically can only be disable on a per app basis (if the app allows you to, which most don’t)
worked around with a custom app for replacing the sharing menu (which can no longer be set to be the default since i don’t remember which android version, and sharing support with it can vary on a per app basis)
or globally by using a device which allows disabling it because of OEM customizations (i’m only aware of Samsung generally doing this, probably because iOS has a setting for disabling their direct share equivalent, and the sharing menu on my boox palma 2 pro doesn’t have it at all atm)
it’s really baffling how there’s no default google-implemented way on android to either disable it outright or manually delete outdated contacts from it
even taking the pretense at face value, this would just be adults damning kids who are queer, autistic and/or in abusive households/communities (among others) and patting themselves on the back
always scrambling to “protect” kids without ever considering their needs or why they engage in the behavior they do at all
(assuming they’re not just seen as defective goods to be either “corrected” or disposed of, of course)