I don't have to trust them if the code is open source and it doesn't send any data back to them or anyone else unless I explicitly allow it. I will try this browser and I will turn off telemetry, just like I do with Firefox. What makes me angry is why call it a "private browser" and not take it all the way? You can accomplish everything this browser does with Firefox except you have to configure it, why leave this one last thing enabled by default? I know no one at Mozilla really thinks "you can trust us" is a valid claim in the privacy game so something else is up, probably not a conspiracy, but at the very least, the wrong people are making some calls.

you can say that about Google, but never of a open source project.

people have minimal ownership of code and time they contributed. they should not allow people to screw the project over without being vocal.

its like someone invading your home, breaking everything, and people just telling you "if you don't like it just move elsewhere".