To make it clear to those who are misunderstanding: that’s a list of companies that host matrix for you. They do it at a good price.
If you and your friends chip, it’ll be a few bucks a pop per month to have your own private server with voice chat rooms and video chat rooms.
It’s all opensource and contributes to the ecosystem. Best of all, no age verification because the data is yours.
I know, I mentioned that.
On mobile on the element client, absolutely not. The spaces group chats show up in your DMs, and there is not a way to turn that off. Yes I know about other clients existing, there’s one where you can turn that off, but it’s not even mentioned on the main Matrix website.