Tsukasa Fushimi is a pretty cool guy. Writes incest/inseki fiction and manages to rustle everyone's jimmies across the entire world.
I like Kanzaki Hiro's character designs from the LN and anime the best, but Rin's art is also really nice in the manga. Small details like drawing Elf's house differently, or Masamune's room differently are nice things to notice.
I am amused but not surprised that a lot of people see the tags for this story and then still feel the need to loudly cry about the manga. Imagine hating yaoi and then crying about a yaoi story; similar vibes.
Other thoughts:
I think EMS stays at a consistent quality from start to finish. Unlike a lot of other work that starts strong and ends weak, for example.
The humor derives from situational absurdity. I've noticed that this type of humor seems to fly right over people's heads these days probably because western education/society is fucked. Most prominently all these characters are desperately trying to act like adults when they don't even have the faintest clue about biology or love in the first place.
Kagurazaka is really underappreciated in two ways: 1) she cute AF and her subplot with the other writer being in love with her is funny and 2) as the only "adult" through most of the story, she acts as kind of a barometer of normality against which to compare all of the completely ridiculous actions of everyone else. Oh and I guess bonus point 3) also funny that she is jealous of everyone else finding love around her while she toils away in the thankless role of the oft-abused editor.
Personal theory: this anime was big enough in Japan to probably earn a second season of it hadn't been for the loli manga backlash that crept
up in the times leading to the 2020 Tokyo Olympics.