And now they are -more- open. Did you misread their post? AGPL is just forced open source.
I would find/fork a LibreMatrix and direct myself and all my clients to use that instead.
Openness and accountability is why I use matrix, and expect many others feel the same.
It is in the best interest of Element to stay open. After all, end to end encryption is impossible to trust if a central party controls both ends.
That isn't more open to me.