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
Idk about on Windows & macOS, but there are a lot of other options not based on Gecko (Firefox) or Blink (Chromium). Downside is that they don't have as many features or plugin support.
https://wiki.archlinux.org/title/List_of_applications#Web_browsers