If you want your users to help you learn how Luna is used and preforms in real environments, you ask for them for feedback rather than forcefully extract it.
Having telemetry enabled by default (or much worse, being mandatory) is disrespectful. It's also a fairly good indicator of what you think of your users.
Although I need to point out there’s a huge difference between what people say vs what they actually do (see https://www.nngroup.com/articles/first-rule-of-usability-don...) and I can’t imagine an effective product development process that ignores the actual usage data.
So why don't you just make it a non-required field? I don't appreciate your attitude towards user privacy, so I will never use any of your products.
> We will release soon a fix which would allow you to progress without providing the mail.
If this happens, then you have indeed solved my issue, and restored my confidence in the human race. Thank you.
I do not promise it will be resolved tomorrow, because we've got some high priority bugs regarding windows installation, but I'll ask our team to resolve it faster than later.