I blog at https://friendshipcastle.zip. I'm still new to the world of blogging, but I have been trying to refine my writing style and learn how to talk about the things that I've been learning about.

I'm not aware of rust hanging any telemetry

Rustup was going to add it, some work was done, and then it was abandoned.

This was years ago. https://github.com/rust-lang/rustup/pull/1642

Interesting. I'd assume that the installer is one of the better places to get this information too.

For what it's worth I have actually listened to the arguments that the other side had made, but I didn't want to focus on that in place of the stuff that I felt was missed.

I think the Go developers argued for it very well, but there is a reason they decided to go with opt-out, so calling it a mistake makes no sense to me unless you address that reason.

My argument in TFA is that going opt-in biases the data so much that it makes the process of building that system a mistake. Of course, under the assumption that it is ethically correct to build such a system in the first place.