I think I'm out of the loop: what exactly is so valuable about this telemetry? I don't believe my coding habits can be used for advertising.
I don't work at Microsoft but I work somewhere similar on a product that collects similar types of telemetry and those words are not empty, they are very, very true. We absolutely add, remove, and change things about the UI based on what our telemetry says people do.
And it's not just about moving things around (which I know HN hates), it's about making the page load faster (which I know HN loves!). We are going through a concerted effort to lower page TTVC at the moment and a big part is going to have to be turning off some features that show by default that take too long to load and guess how we'll be making the call about which features to turn off?