I have nothing against people that choose to identify as whatever niche sexuality they fancy. But I do have a problem with them demanding special treatment to the nth degree, and claiming "discrimination" if their particular demands aren't met.
There is nothing special treatment about having the ability to identify yourself as yourself.
And discrimination is very real, from being fired for being trans/genderqueer to being murdered for being trans/genderqueer.
Heightening visibility by, e.g., providing an option on a salary survey, helps fight against the very real violence that the LGBTQ community still experiences.