By happenstance I just noticed the wording of the lgbt+ tag:

The LGBT+ (Lesbian, Gay, Bisexual, Transgender, and sexual/gender minorities) tag may be used where issues of sexuality, gender, or lack there of, are central to the question

Unless I'm misreading this it sounds like the tag is considered appropriate when issues of sexuality or gender are or are not central to the question? Seems like that can't be correct because then it would always be applicable?