The marketshare on desktop is more like 8%, up to 60% depending on the country.
wdym
Say Mozilla’s market share was 25, it wasn’t necessary to be beholden to Google.
Of course, but that's not the reality. The reality is that Google have positioned Firefox as a "viable competition" while having them mostly under control. Can you trust Mozilla as an organization, when you know that it receives over 80% of its funding from Google?
is there any evidence, that Mozilla's decisions are explicitly made to favor Google? imo it's pretty alright for them to take some cash from Google and make it their default search, and give you the option to change that.