For some of us, Linux just isn't the right tool for the job. I use Linux all the time for the text manipulation tools. I've built and manage a number of Linux based application servers. I built Linux servers as our premises relay servers. I like Linux.
But I can't use Linux to manage our Exchange servers, Active Directory, Azure Active Directory Connect, Active Directory Federation Services, Office 365, etc... I need to use Windows in order to manage those systems.
It's important to use the right tool for the job.
Mark
Amen. I'm in the same boat. My work workstation is Linux (CentOS), and we have Ubuntu servers coming out our ears. And some Macs. And a ton of Windows machines including a dozen or so Windows Servers (AD among them of course).
Cross-platform tools are the saving grace.