What about "Linux"? It is also a registered trademark.
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.
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.