This is very bad news for those who can't quite break away from big tech. Never a bad time to redouble one's efforts to help friends and family break away.

"Using the proposed "Web Environment Integrity" means websites can select on which devices (browsers) they wish to be displayed, and can refuse service to other devices. It binds client side software to a website, creating a silo'd app."

https://github.com/RupertBenWiser/Web-Environment-Integrity/blob/main/explainer.md