@networkexception @matrix Seirdy ( @Seirdy ) touched on this same concern in one of their blog posts a while back, and I share this concern as well. When Matrix was first announced I thought it was a bright spot in the darkness of walled-off IM services; with this move now I'm even less sure about that.
https://seirdy.one/posts/2021/02/23/keeping-platforms-open/#how-open-platforms-become-closed