I think part of it is that EY writes for fun, rather than solely with some direct aim in mind, and he really likes stomping on landmines. (And who can blame him? Stomping on landmines is fun!) The fic includes a fair number of things that his average audience member dislikes, but which is there because he likes it, and would likely be unable to write as much if he kept restricting himself. There's a reason that there's a significant word count devoted to anime references, and I believe it's mostly related to what produces hedons for him.
I'm not saying he should remove the anime references, although they do go straight over my head. I'm saying that getting rid of the legalised rape would involve cutting one or two sentences - a tiny amount of the story which probably generates a hugely disproportionate amount of criticism.
For what its worth, when I write fiction, I just write whatever inspire me, and then go back over it later and remove the bits which no-one else will get.
[Contains No HPMOR Spoliers]
[http://hpmor.com/notes/119/](http://hpmor.com/notes/119/)
I was at first confused by Eliezer's requests at the end of Ch. 119. I missed his Author's Notes, which his explains his rationale behind them. I thought I would share in case others missed it, especially because readers on LessWrong may have more elite or broader networks to help Eliezer achieve his new goals.
Eliezer has several other projects he might be interested in. Learn more by clicking the link.