As a straight male, I already said I wouldn't have a problem if Bioware ever makes a game with a full gay roster. My enjoyment of it would depend on the quality of it, not the characters' sexualities.
I don't really put much stock in what people say about how they would feel or act in a hypothetical situation that they will never, ever, face.
I think that some of the people who make statements like this really genuinely think that they mean it. The issue for me isn't that it was just "a game" without gay options. It was 6 out of 10 games without gay options.
Just imagine this scenario:
DA: I (2014) - all gay options; no straight options
ME 4 (2015)- all gay options; no straight options
DA 4 (2016) - all gay options; no straight options
New Franchise 1 Game 1 (2017) - all gay options; no straight options
New Franchise 2 Game 1 (2018) - mostly gay options; one straight option
New Franchise 1 Game 2 (2019) - mostly gay options; one straight option
New Franchise 2 Game 2 (2020) - all bisexual options; so both straight and gay players have multiple choices
New Franchise 1 Game 3 (2021) - they announce that they aren't doing all bisexual options anymore and are going back "a variety of sexualities"
Don't you think that straight people would have a problem with this scenario? And that in New Franchise 1 Game 3 forums, they would make threads asking for more straight options? And don't you think a gay person saying, "Meh, I'd be fine if there weren't gay options" probably wouldn't be much of a comfort?