I wonder where he makes the step from "OS suited for professionals" to "MacOS/Apple"?
-housetier
I could make the connection explicit, but I do not reveal individuals, and that would be needed.
Knowing the industry, I know that he's talking about OS X.
There are only 3 options:
Windows - obviously not from the context
OS X
Linux / Unix
I'll say creative professional. That's enough.