It started with anti-discrimination laws protecting gays (’orientation’) which defined it as being the same as sex or race :all as identities.
But 'sexual orientation' is really just sexual desire which is invisible, so those laws protect selected behavior.
That is when gays became the same victim status as blacks, now they and their behavior are protected even above skin color.
For example : Shouldn't pedophilia be defined as sexual 'orientation' ? And protected as such?
Reminds me of the woman who sued a company for not hiring her because she had flat feet. When asked if the company had asked her about her feet she said, 'no'. When asked how they found out she had flat feet, she told them she volunteered the information in her first interview...