Bad advice. Counterpoint: Wine works really well (especially for old applications) and there's nothing wrong with using it. If people restrict themselves to arbitrary rules then many won't be able to use Linux.
There is value in those who push by absolutes like this; they are moving the world in their direction; it's important to the market to have some edge-zealots on the demand side. Helps prevent monopoly and is an at-large benefit.
Disclosure: I'm 100% Linux since 2005 (except embed devices (game console, Roku)). All the Line-of-Business stuff "just works".
I found I was unable to install Wine due to package manager conflicts. I had only one Windows program (Everett Kaser's Hero Hearts game) that I wanted to run on Linux, so I wrote my own implementation of the game engine, which is (in my opinion) much better than the original implementation.
Ask IBM how "OS/2 For Windows" turned out.
https://en.wikipedia.org/wiki/OS/2