If i game is good i take great pleasure in playing 5 to 8 hours to get to the horny, especially if the pacing is good.
Imagine having a raging boner for hours only to release it's full power at around the 6th hour mark.
It's what happened to me when i first played this and i kept getting her knocked up.
You zoomies would never understand
I certainly agree with respect to the build up and pacing of this game, but as not a zoomie I do also remember the days where CG packs and save files were far and away the best way to get quality content. Average manga quality was pretty rough and sites like pixiv weren't close to as mature as they are these days. VNs had the good stuff, but also they were generally 30-80 hours long and in Japanese, so ya know.
This game is really strong on the experience, of discovering what you can do, how options open up, the build, the pay off. But without having already played it you wouldn't know that it's going to be like that, so it's not surprising that people would just want to see the horny scenes as if it were any other, less-involved game.