Up until the mid-2010s, the prevailing dogma within Google and at most other Big Tech companies was this spirit of "information libertarianism". We make all information accessible and useful, and the world gets better.
Around that time, a lot of pressure started to mount on tech companies for their complicity in bad things; the election of Donald Trump was a pretty major catalyst. So, all the companies responded to public pressure by building algorithmic fairness organizations. But because tech companies hire from specific backgrounds and in specific locations, and aren't particularly ideologically diverse, they converged on enforcing a worldview that aligns with their morality and their concerns.
Gemini is incredibly touchy about hot-button issues that animate progressive folks in the SF Bay Area and almost nowhere else. But then, we literally demanded Google and Facebook to become arbiters of morality - so what outcome were we hoping for?