Earlier quoted context omitted.
I guess I'm interested in browsers who's developers wouldn't have done this in the first place - a browser which has privacy as a core principle and who's develop we wouldn't consider pushing any data, regardless of aggregation or commercial value, to a third party without explicit consent..
"performance, broad compatibility with websites" These are things which are greatly helped by having good analytics (Telemetry for the browser, analytics on your sites). You have to realize that to some extent these goals aren't mutually compatible. Developer resources don't appear out of thin air, even for open source software. Note how in the threads Mozilla explicitly acknowledges alternatives to GA.
Your comparison is a false equivalence, because it's not about telemetry vs privacy, it's about consent. If Mozilla devs adhered to the ethos of the company they took a job at they simply would not have implemented this feature.