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
Look, it's an unpopular opinion and many will disagree with me, but while Apple does certain things to restrict you from customizing your experience, they're doing far less to destroy the open Internet than Google. So if you need a fully featured OS (which degoogled custom Android ROMs might not be, if you need banking for an example), it's still an alternative for now, until Linux mobile experience gets better.
On iOS, there's no browser extensions (for e.g. ad blocking), no alternative browsers, and no FOSS apps of any kind. That platform is extremely hostile to the ideals of computing freedom.
Like I said, it's a better (for privacy) alternative to stock Android when you need a fully functional operating system. If you can stand to lose the oppressive Google functionality, you can go degoogled Android or preferably Linux (if you don't care about battery life or app availability).