And my coms are limited to XMPP, e-mail, IRC, Matrix, Signal …& Mattermost for work & this cover the people I talk to (tho proprietary LINE would help in my case, but they ruined my trust after remove LINE Lite so I quit). Network effects are strong, but you can offer alternative methods to folks… & given that mine doubles as my unGoogled notifications, I have zero issue keeping my low-bandwidth XMPP connection even if the majority of my contacts aren’t using it (which is a protocol with a user base largely of older folks like you & I that focus on backwards compatibility so maintenance isn’t a burden).