I mean, that's great and all, but it would still be pretty annoying if large parts of your network go down, and especially if matrix.org would go down.
We're keeping one alive with friends, not because we need it, but because we can and it's easy to do so.
We can argue matrix has not the most fancyful clients right now, and it might not be a perfect solution for everybody, however there are many clients to choose from, you can write one easily with many support libraries, it's easy to script, you can have full control.
This is what we should push for. I've recommended signal to a lot of friends, and I currently feel stupid for doing so: It was a hurdle to convince them, and what I achieved was to move some to another privately run network with arbitrary rules and mandated software controlled by a single entity which is now starting to do random crap.
(But also: I don't have the resources to run a separate instance for myself, let alone for my friends.)
Hint: the correct answer to this is not "Well there's your problem you're expecting to run it on Digital oc-" no, this attitude helps nobody. Like Picard said, make it so.
Meanwhile you also have the option to get a client with multi-account support. Again, not all clients have this, but this is again something that no other messenger does, or will ever allow purely for market reasons.