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 know my uBO has saved me from some hostile shit. So yeah it's a part of my browser security. I have it configured to a stricter blocking mode so it's not just blocking ads for me, it gets other stuff that can be a problem.
Anyway I'm aware of the Manifest V3 business and being on Chrome I'm just waiting for the hammer to fall before going to Firefox. If they start adding DRM as well, I'm out of there quick.
Yeah, yeah, I know, just go to Firefox now, but I don't really want to deal with a new browser and all my custom stuff until I have to. I'm old and that shit is super hard to motivate on for me. Not to say I'm inept, I mean I've spent my whole career in tech, but old dogs and all.