I don't want a bazillion apps on my phone, if I need it I keep it, if not its gone. So far Amethyst has done everything that I need so I don't use these other apps.
I wonder if its a nostr adoption issue too. So far, people have come to nostr for censorship resistant microblogging (and to talk endlessly about bitcoin). You don't have this mass of people demanding all these other use cases. They want microblogging which Amethyst handles quite well.