From a past forum post I've read: the biggest problem with #telemetry is not even necessarily about privacy. The problem is that it's not human; telemetry is simply data. Data that for all the user knows could just be rigged. You can't scream and curse at data when it's being used to justify removing a feature you like or need. But you can call for someone's figurative head in a community-built #opensource project that doesn't use telemetry and the developers there will feel it.