I use Windows 10 on my main dev box. I somewhat agree with the parent. The Windows 10 situation has been enough to push me to start experimenting with Linux.

The phone-home and forced-update-reboot are the big problems for me:

The phone-home behavior of Windows 10 is a repellent. Turning it all off is non-trivial. The easily accessible privacy settings don't disable everything. There are various lists of firewall rules, scripts, policy settings etc. I can't recommend a specific source, but I think there are some well-maintained lists/scripts on github. To be honest, I'm not sure whether anyone knows exactly what goes back to Microsoft (not being tin-foil hat about it, I just don't think it's well documented).

The no-choice-auto-update-reboot thing is also terrible (I've lost data on more than one occasion from unsaved files when Windows forces a reboot while I'm afk). This can be disabled with a lot of work and research. Some people say manual updates will re-enable it. Note that I really do want to keep my machine up to date, but ideally I don't want to have to reboot, and when I do have to reboot I want to choose exactly when. I didn't buy a UPS so my computer could reboot randomly by itself.

As for "ads on startmenu, little QA (buggy like never before)":

Running Windows 10 Pro I have not seen any advertising.

The system runs fine for me. Arguably it runs with lower memory usage than Win 7. I agree that Win 7 is very stable, and that's been my experience with Win 10 too. That said, I only started using Win10 in mid 2016, so perhaps earlier builds were worse.

Overall I would have been happy to stay with Win 7. So far I've found Linux GUI to be less polished, but maybe I'll get used to it.