I run Gentoo, which has a telemetry use flag. This will enable telemetry for a number of packages.
I hate telemetry on non-FOSS software like Windows, but is there real harm in doing it with FOSS software? I like to think I’d be helping the devs create better software.
I absolutely love the KDE approach and I always enable telemetry for FOSS apps if I can see what exactly is being sent. Hell, I wouldn’t even mind some opt out telemetry if I could see what data the app sends back “home”. That’s, obviously, if the data sent doesn’t violate my privacy significantly