Not sure about the ads, but telemetry definitely increases reliability. It allows to debug very specific issues with a comprehensive information about user envi

Not sure about the ads, but telemetry definitely increases reliability. It allows to debug very specific issues with a comprehensive information about user environment. Source: debugged proprietary app multiple times using telemetry information. Sometimes the issues discovered were not reproducible without recreating some very specific environments. Surely there are downsides to telemetry and tracking, but they can be useful for development.