All that stuff is shared directly with Mozilla. The Chrome stuff is shared with everyone with the money to pay for it.

So you'd let the perfect be the enemy of the good and go all-in on Chrome? The way I see it, whatever its imperfections, it's the source of the only non-Safari, non-Chromium browser with basically any market share, and has its derivatives you can choose from. I've seen LibreWolf mentioned several times. And frankly, Mozilla's narrower market scope, to say nothing of their market share, when compared with the behemoth that is Alphabet, make all this immaterial. I can turn all those settings off quite easily. My irritation stems from the unique download identifiers and the occasions when they also make stupid alterations, like that Firefox View thing (which got disabled, of course).

Chrome is made by and funded by an ad company.