I remember another German email provider raising this last week: https://mailbox.org/en/post/chat-control-the-latest-eu-plans...
And https://www.patrick-breyer.de/en/posts/messaging-and-chat-co...
Other posts here mentioned it as exaggerated but it sounds pretty detailed there. It worries me a bit because it would instantly move the EU from one of the best on privacy protections to one of the worst in the western world.