Chrome's the fastest browser on the market. That, along with some nice marketing strategy is what makes it the absolute market leader.

The reason Chrome is so fast, is most likely thanks to the performance (harmless) data it collects. Firefox may be proud of not collecting as much data, but (at least on macOS) they spend twice the battery to render twice as slow.

Not saying you shouldn't be able to choose what data you're collected (which, you are) but there are reasons (not necessarily evil) to get that data to the devs.