In all serious, people always say m/m erases women from canon but I rarely see this actually happening. Pairing fics tend to be oneshots, porn or otherwise, and usually heavily on the two characters regards of being het/slash/femslash.
If the fandom have regular, prominent female characters, you will never very rarely see actual erasure (meaning that they were erased because the author didn't like females) but if the fandom as occasionally but reoccurring female character (like ones who don't appear all that much), there's no real obligation to include them like the male version of that character. The problem is that series like those never had much of a female presence (which in turn the fans are likely to be slash oriented in terms of shipping).
I think we call erasure too lightly if said canon doesn't have a very strong female presence in the first place. But ones with significant female canonical presence (the female characters are consistently present and their own characters) are far less likely to erase.
no subject
If the fandom have regular, prominent female characters, you will never very rarely see actual erasure (meaning that they were erased because the author didn't like females) but if the fandom as occasionally but reoccurring female character (like ones who don't appear all that much), there's no real obligation to include them like the male version of that character. The problem is that series like those never had much of a female presence (which in turn the fans are likely to be slash oriented in terms of shipping).
I think we call erasure too lightly if said canon doesn't have a very strong female presence in the first place. But ones with significant female canonical presence (the female characters are consistently present and their own characters) are far less likely to erase.