These are a decent overview

forum.hackliberty.org/t/…/224

disroot.org/blog/matrix-closure

I don’t agree with all of those points, but that’s the gist. The metadata issue is becoming a bigger factor. I hope things like katzenpost find massive success…

As for the ecosystem: Element and Synapse are really the only viable implementations. Fluffychat is okay on android but that’s about it; most lack features or are using outdated and vulnerable dependencies / are poorly maintained / etc.

But it’s not all negatives. One great thing about Matrix is how well they handle multiple devices. It’s also been a security weak point, but not too bad and has decent ux (depending on impl…)