I'm not sure if "not playing the game" is a valid GDPR consent thing, especially as this analytics starts with first launch of the game, and users are not aware of it.
That thing put apart: is there no way to opt-in for this analytics ?
Is there any other tool that would be more privacy/consent-friendly that you could use ?
I'm not against it if it's opt-in, especially if it's only for errors and bugs report (as long as this doesn't contains personal information), and maybe I would activate it, especially if it helps you to support Linux (which is great ! And thanks a lot for that :). Maybe I'd prefer to send a bug report in another way if I find a crash/bug.
Especially on Linux I'd think people will be willing to help with bug reports and logs if they encounter some issues.
By the way I found a way to disable Unity analytics by hand (https://www.reddit.com/r/linux_gaming/comments/eb3y7q/if_youre_the_kind_of_person_that_doesnt_like/) so I played to your game: still a bit basic (that's understandable) but already quite funny, I like it, well done.