Being annoyed by his ability to pass and the state of the world, in general, doesn't invalidate his sexuality. I couldn't care less who he sleeps with (so long as parties involved are of consenting age).
My irritation has nothing to do with this particular individual’s choice to publicize how he describes his romantic attractions/interests. I'm annoyed that if this was some random dude in Smallville, USA going about his life, employed, keeps to himself, bothers no one else or inconveniences anybody in anyway, and he happens to be attracted to men and women, and behaves in every way that would be considered appropriate for a hetero person in public, except depending on his mood or what's going on in his life at the time, you may learn he's romantically involved with a man or a woman if you so inquired of him that information. Then he may be branded or harassed for being “queer” or less than “straight” and catch hell from anybody because he's not fulfilling some random god’s plan to “go forth be fruitful and multiply.”
I'm irritated that anybody in the entertainment industry feels pressured to overshare their personal details in interviews. I'm irritated that headlines like the one referenced do nothing to help the “cause” by normalizing an everyday reality. In fact, they do more to “other” it because now we’re all talking about how you rarely read headlines like that and “good for him.”
I'm annoyed that no one goes, “Uh, and why am I being told this?” before redirecting the subject back to something pertinent. I mean, great dude, you identify as bisexual, swell, this mean we’re going to become romantically involved now? Is that why you feel I should know this information? Cause I'm not even sure we’d get along anyway. I'm easily annoyed by many things.