It's a VN (of sorts), so like many novels, text is a major staple of the genre. The creator has also made it clear that while this is definitively fap material, he still wants to make a proper narrative to tie it all together.
Opinions about this obviously vary, and I can understand your frustration will walls of text that, while adding to the lore or fleshing out characters, also increase the time between options and sex scenes. To some, this will make for good world building, and will allow them to connect to, and feel involved with, the characters more. To others, it may feel like your level of involvement in the game is slightly diminished, as you must sit back and let the world explain itself when all you want is to be the one to shape it.
With all of this being said, everyone who heads into this game needs to understand what it is, and what it is not: that it is more of a Bioware or Bethesda experience than a Trayarch or Activision one.
At the end of the day, if you are fine with just getting the gist of the plot (thus, skipping all of the text) and rolling through to get to the sex scenes/decisions while still generally understanding what is going on, there is an option for you: read the summary, hold shift, and enjoy.