Only people attracted to women are "supposed" to play this game insofar as only men are "supposed" to play, for example, Gothic because the player character is a man.
There's always going to be the majority audience. RPGs, I believe, have a bigger female audience compared to most other genres, but women are still not the majority. The majority are men, and the majority of men are straight. A female narrator would "cover" the biggest percentage of players, that being straight men, as well as bi men and women.
And yet if you look at the romanceable companions, there are only two romanceable female characters (vs. three guys), and only one of them is conventionally pretty. Doesn't look to me like Larian is catering to your majority audience here.

Tbh, I find the narrator suspicious, she sounds almost smug at times. I wonder whether it isn't a set up similar to IWD.