looks like rendering adblockers extensions obsolete with manifest-v3 was not enough so now they try to implement DRM into the browser giving the ability to any website to refuse traffic to you if you don't run a complaint browser ( cough...firefox )
here is an article in hacker news since i'm sure they can explain this to you better than i.
and also some github docs
I see so many comments from people saying they'll jump ship if Google adds this to Chrome. They'll move over to Firefox right away. But the thing most people don't know is one reason Google has such a broad reach is they make it so crazy easy to integrate their services for developers.
So, yes, users who dislike what they're doing should stop using Google products if possible. But, more importantly, developers or project managers, etc. should all resist the urge to utilize this kind of feature even if it's easy.