Not necessarily; many people just don't know they can enable it, or can't be bothered, or don't really know the details and have better things to do than investigate so opt-out "just in case" but wouldn't mind opting-in if they were familiar with the details.

At this point I think it's very hard to say what "most users" do or don't want exactly.

Huh, don't create a new programming language, no one will use it if it doesn't exist. Isn't it strong argument against new programing languages?

If you default it to on and most people don’t turn it off is that a strong argument in favor of telemetry?