I disagree. I’ve lost touch with numerous casual acquaintances over the years because they went to one app and I didn’t or vice versa. If there was a better effort at standardization it would have been easier to maintain these connections rather than lose touch because some people went to Facebook messenger while others went to WhatsApp, discord, snap, etc and the fragmentation made it a nightmare to keep up with everyone. SMS is the standby but a surprising amount of people hate using text messages or email despite being completely comfortable with asynchronous text communication on other platforms. It makes no sense to me because it is functionally the exact same and the people I have met who have this concern are definitely not worried about things like message encryption
Additionally nowadays it’s becoming more common to be ideologically against usage of platforms and it sucks to be locked out of communication because of that. I don’t use meta products because I think they’re a disgusting company but a lot of my older family members refuse to move from the platform. If there was an open standard that allowed for me to use a platform I was comfortable with that could interoperate with Facebook messenger I could live with that.