What about Windows 10 that Office is sitting on?
Surely the telemetry of both Office and Windows 10 is of concern here, not just Office?
The easiest way to comply with GDPR is to not collect the data, or at a minimum give us back the ability to say 'no' to data collection of any kind. I'm hoping this will focus some attention on Windows 10 and have Microsoft put back the ability to stop telemetry from the OS, and with all the update screw ups, maybe give us back update control too?
It all 'worked fine' up until Windows 7, so maybe if it wasn't broken, it didn't need fixing.