By that logic, is the term Baptist or Hindu scientifically sound? Is the term string theory? Is the term working class ? What makes words or terminology scientifically sound that doesn't apply here?

It sounds like someone disagrees with the underlying identity that individuals ascribe themselves and now anyone who do research using these identities is censored. You don't have to endorse (or even fully understand) a phenomena to research it. Arguably those are some of the most interesting research questions.