It's a super subjective opinion, feel free to ignore... I just find Matrix, or generally federated messaging, boring. Basically better email. Boring is not necessarily bad, it's even good if works well and is used by many. I've read that matrix has good design. But I don't see it as anything special. In the 2000 xmpp was doing similar things. I understand that matrix is more modern, but I'm just not excited about it... I would be happy if it were new WhatsApp, but it's not happening....