I also had some ??? in my head while reading the 坂口 piece (理想の女), but I usually have to read his essays at least twice to understand what he’s saying 
I agree it seemed to be about the difference between reality and literature but also about criticisms of ‘junk’ literature because it was entertaining. Basically saying something I couldn’t quite pin down about how some of his contemporaries looked down on books written for entertainment, and how that revealed a hypocrisy I think?
Some bits that stood out to me were these lines:
小説にとつては、戯作性といふものが必要なので、それは小説を不純ならしめるどころか、むしろ思想性を伸展させ、育てるものだ。
which if I try to loosely translate is like
For novels, ‘trashiness’ is essential. Rather than making them less pure (literature) it cultivates their ideology (thing they are trying to say)
and
私といへども、私なりに、ともかく、理想の女を書きたいのだ。否、理想の人間を、人格を書きたいのだ。たゞ、それを書かうと希願しながら、いつも、醜怪なものしか書くことができないだけなのだ。
which again if I try to loosely translate I think is like
Even someone like myself, in my way, well I want to write an ideal woman. Nay (lol), I want to write an ideal human, an ideal individual. However, as I desperately try to write these characters, I can never write anything but monstrosities.
Really enjoyed this one. I usually like 坂口安吾’s writing even though it always kicks my butt 
