The much maligned “Trusted Computing” idea requires that the party you are supposed to trust deserves to be trusted, and Google is DEFINITELY NOT worthy of being trusted, this is a naked power grab to destroy the open web for Google’s ad profits no matter the consequences, this would put heavy surveillance in Google’s hands, this would eliminate ad-blocking, this would break any and all accessibility features, this would obliterate any competing platform, this is very much opposed to what the web is.
Mozilla is trying to reduce its dependency on the Google search deal. The dependence is big, but Mozilla has some reserves and receives the money for channeling searches to Google. They could and already make such deals with other search providers.