Telemetry, supposed to be only sending data that would benefit the user, by helping the developers to understand what the users really need.
Microsoft and Apple abused that term and it became just ‘data collection’. FOSS telemetry shouldn’t, and usually - hopefully - wouldn’t collect unnecessary data, to sell it back as adverts.
So if you trust <project-name>, I don’t see why not to enable it. It just helps the devs, and you too, at the end.