God, doujin afterwards are completely nuts. No matter how fucked up the material is, the author's sense of Japanese politeness will still kick in and they'll kindly walk you through their thought process and life events while writing it, usually apologizing for completing it so late, thanking the reader, editor, assistants, etc. and hoping to see them again soon at Comiket or whatever. It can be darkly comical at times to remember that the person who created this fucked up shit is still a human being that has other parts of their life and had to interact with other humans to make this, even a female assistant, (which feels super uncomfortable to think about)) but it really shows you how detached the author can be from the work itself and explains a lot of the mentality of "oh, this is just fictional, I know better than this IRL". (hopefully) For better or worse, the semi-professionalism of doujinshi really allows people to make things no other society would so eagerly and not-even-anonymously consume at a mass production level.
Maybe I'm just reading a lot into this after hearing about Patreon's new rulings against people using it to make porn and how that might affect things, IDK.

ShindoL is an American who lives in Japan and draws doujin. The Weaboo Dream incarnate.