Also a dude here. Most Yaoi Manhwa and Manga is written for women lol. However, some authors are a lot more informed about the lgbt community and the ins and outs of relationships, anal sex, etc. than others. There is an increase in verse characters being created but they're just not as common yet.
But it's all fantasy. You'll likely never see douching, enemas or psyllium husk gobbling. I just take it for what it is and have a nice time with the art and the *drama*

u can tell this was written by women for women cuz being the top is seen as the "better" one
like no ma'am we have a horrible shortage of tops :[