I disagree that as the as the article states telemetry “contradicts open-source values”, nowhere is it said in the official definition that telemetry by itself is not ok and as long as it is opt-in and the handler makes clear reports on the data they gathered, I’d say it’s a good opportunity to give valuable insight to the developers on the use of their software, done in this manner it doesn’t trample over anyone’s choices either.
Notable examples of open source projects that implement telemetry are KDE and Mozilla, it’s not unheard of at all