I disable telemetry whenever I can. But the major vendors already use it everywhere (Firefox, vscode, the rust installer, just a few examples) - I've disabled it in all of those, but most don't, and we don't always pay attention to apps that add this as a "feature".

Correction: rustup (rust installer) did collect telemetry but it seems to be removed now. https://github.com/rust-lang/rustup/issues/341 The reputation may stick, as we know :) No worries now.