No, I meant heterosexist. (And I may be a bigger grammar-Nazi than you are.)
'Heterosexual' refers to people who are attracted only to people of a different sex and/or gender than their own, or to behavior involving two people (or animals) of different sex / gender. Words can't really be heterosexual, any more than a brick or an algebra exam could.
'Heterosexist' refers to words, actions, thoughts, rules, etc. which privilege heterosexuality over other sexual orientations, or which deny the existence of orientations other than heterosexuality. Heterosexism is cognate with both sexism (which privileges maleness and/or masculinity over other sexes and genders) and cissexism (which privileges people who are cisgender at the expense of people who are transgender, genderqueer, agender, intersex, etc.) and, like so many -ism words, is not a good thing.
Given that, at most, only 60-80% of humans are entirely heterosexual, the idea of a thousand "admirers"
all being
both "of the opposite gender" and heterosexual seems unlikely, absent some explanation for why some of them
wouldn't be the same gender as the player (or belong to some other gender entirely).
That's exactly the kind of
unintentional erasure people belonging to privileged groups often create,
not out of any intent to offend, but because, as part of a socially dominant group, they just don't
have to be aware of non-dominant groups, and so can easily forget to include them. Most media that fail
the Bechdel test didn't set out intending to.
This is why, for example, it was so refreshing that Nifflas decided to include brown-skinned characters and characters with disabilities in Knytt Underground, including (but hardly limited to) the player-character Mi, as well as non-heterosexual characters. Inclusion is great, especially for people who are used to not seeing people like them represented in media -- whether the media in question is a videogame, a fiction book, a nonfiction book, a film, an advertisement, etc. And it also helps people who
are part of privileged groups learn not to expect everything to be about them all the time.
[/social-justice rant]