For pages visited, they likely get this for free for a good chunk of users who opt in to sync. What other interesting telemetry data is there?

I think chrome is a good browser as long as your careful about which settings you toggle and you can live with the vendor having a mild incentive for adding new settings with bad (from a privacy pov) defaults. In return, you arguably get the most secure browser.

Which is basically zero. They do that just fine without telemetry. GA is ubiquitous.