It's sad to see a FOSS project look to add (user-controlled!) telemetry and the first thing the community says is "what, so a corporation can mine our data?"
Not all telemetry is bad. Our view of it is just tainted because of its abuse by companies.
Strip personal information, ask the user, and aggregate it.
It's genuinely useful information for developers to have. It's far easier to get information on bugs like this than it is to wait on an issue tracker. You can also see what most people are interested in - performance, workflow, features, etc.