As an admin who manages windows devices, it’s not only a pain for the end users. I will readily admit that the management tools are quite extensive and somewhat easy to use, but they’re damn near impossible to debug when they don’t work, and that’s quite often. Gpo’s often refuse to apply without reason, those ads on the Lock Screen? You can remove those if you pay for enterprise or education edition. Running pro? Nope you get ads.
Thunderbird is quite nice with the new updates