So, I can use Android, or MacOS (whatever versions) to use Intune, but not Win7. Guess what I'll buy soon (not Win10 for sure).
Windows 7 went out of support on January 14, 2020, which is why we decided to stop supporting Windows 7 in Intune on the same date (see: aka.ms/Windows7_Intune). Windows 10 offers many more management options and is more secure than Windows 7.
Intune is constantly adding support for newer versions of all of our supported operating systems (Android, iOS/iPadOS, macOS, and Windows) and removing support for older systems as their developers also remove support. We’re happy to manage your devices no matter which of these platforms you choose.
For more information on the supported versions of each platform, see: https://docs.microsoft.com/en-us/mem/intune/fundamentals/supported-devices-browsers