I found a fangirl saying that Sherlock is heterosexist because it makes fun of homosexuality.

[mcity]

Apparently, making jokes about how Sherlock and John's relationship can easily and reasonably be seen as homosexual is homophobic or something. Oh, and since John and Sherlock act like spouses, they should just be spouses. Of course, there's the minor fact that John has explicitly denied being gay or involved with Sherlock, and has had multiple straight relationships over the course of the series, and no known gay relationships. But those are just details to the dedicated slasher.

They also asserted that making Watson a woman in Elementary is "whitewashing" because it eliminates the chance for sexy gay funtimes. I'm not sure in which dictionary turning a white male character into a female Asian one is whitewashing. Maybe they could explain it to me, in words that people regularly use in conversational English, and not social justice blogs.