It can't be enforced outside of their borders. And it's barely enforceable inside of them. Matrix chat will probably get more popular. Proton, and other private email services, will still exist. This seems like people who don't understand tech trying to regulate it.
ETA: if you think this is enforceable, look at how common piracy still is despite it being illegal in most places. VPNs, onion routing, alternative DNS, etc.
The dude that runs that site and writes most (all?) of the articles writes some wild conspiracy stuff. Is there a credible source for this? Like from a person who hasn't said stuff like "If Ossof and Warnock win Joe Biden will have the votes he needs to impose Communism.".