Not an IT expert, not a sysadmin, not a tech guru by a long shot, but as Linux user, I call this post bullshit.
The biggest problem wouldn’t be about having it manage all the machines in a network; it would be having to deal with every dick and jane complain about how they can’t change their desktop background or some other trivial thing they can do on windows or how a specific program is not available or doesn’t feel the same.
Transition into an all-Linux production environment would require a top-down non-negotiable decision and the willingness from top brass to provide trainning down the line and deal with a good deal of shennanigans from middle management.
And no virus on Linux? Yes, it has some built in features that make a bit more robust but there are rootkits and other malware out in the wild capable of hurting a linux system. And if popularity is to come to Linux, at some point there will be a need to harden the standard security protocols to ensure system safety, not forgetting that 90% of the time the main problem is between the chair and the keyboard.