Not everyone likes their choices. I feel it is frustrating people seem to spout that they have bad options when they are personal disfavorites. Lesbians, gay men, and straight men have the same options. Saying that even aesthetics have to meet a standard is very difficult since many people have different views and feelings on what is proper.
There are 4 exclusive for straight characters.
There are 2 exclusive for non straight characters
Iron Bull is Bi and has flirt options, but Cullen is straight and a man can flirt with him, as can a man flirt with Sera before both are turned down. So by having everyone being able to be flirted with, only a character that wants to pursue a relationship will know if they are gay or straight, or possibly Bi. And 2 can't be the issue since, other than ME 2&3 every game with romance has had basically 2 romance options.
Disliking the options are fine, but trying to say they are inadequate for your sexuality due to not being a personal preference, is frustrating.