Unfortunately I have also found it to be a huge impediment to making friends with other millennials who aren’t techie. I sort of left a crowd that was always on xmpp and signal and found myself rather ostracized. Things are changing slowly and most of them are now on Signal and with the usernames it’s easier to exchange contact without relying on phone numbers that feel like a bigger commitment. But unfortunately passed explaining why you won’t support Meta, and why alternatives like Signal are good there isn’t much to do.