He literally can't do his job on this OS... He runs his critical workloads (Linux virtual machines) on another laptop with Linux installed.
I like the idea of the computer that I physically interface with being extremely secure. Considering everything I do with virtualization is through a shell and little I do works without the Internet, accepting a bit of extra inconvenience to have that security seems like a decent trade-off.
It isn't my job, it is my hobby.
I can do my job with ssh terminals and a browser.
Additionally, the Linux VM cons with vmd are off-putting, but I'll be getting them working. I even saw a blog post about running docker containers on linux on vmd. So, I'm going to try that out soon :D