For Linux as well. In my opinion you shouldn't remain blind to the benefits of other operating systems

Linux is the objectively best choice for a significant number of use-cases at the moment (not all of them). Using Linux and communicating that doesn't necessarily make you a "Linux guy."

Obviously, using Linux when a better solution exists for whatever you're trying to solve equally applies. While it may not be unhealthy, it certainly isn't a good idea.

"I'm a guy using Linux" - Ok. "I'm a Linux guy" - Bad.

This is very much an imprecise abstraction, more like a rule of thumb. Just be careful how you think of yourself.

"I ride bicycles" - Fine. "I'm a cyclist" - Getting weird.

"I voted for X" - Ok. "I'm team X" - Dangerous.

Same problem. You shouldn't ignore BSD for example.