Earlier quoted context omitted.
Matrix is a decentralised encrypted chat protocol on which you could build something like Zulip, except decentralised and end-to-end encrypted. Element is the actual app being trialled here, which feels more like Slack and/or Signal than Zulip. The point is that you get something you can selfhost while also interoperating with other deployments… while also encrypting the data end-to-end with Signal protocol.
Yeah I would love to see a new professional application based on Matrix, Element is buggy, other apps lacking too.
Someone should tell the CEO/CTO of Element