I get your point, but that's not exactly what's happening. The developers make a promise and we expect them to deliver. I think this game is very well-crafted, but it's been in development for over two years, and what have we seen in those two years? There are more minigames than actual cutscenes, and several characters with only one line of dialogue. The only thing they update is the introductions for days 1, 2, and 3.
Bruh. 2 years in this scene is nothing. There are plenty of examples similar games that have been in development for close to a decade, have much lower production values, dev is making full time salary from subs and there's still barely any sex.
I agree that there is a bit too much focus on minigames instead sex for my tastes but then again dev is pretty damn open about romance and sex only being minor part of the game even in its finished state. If you're looking for pure dating sim or gooning game this probably won't be your thing.
Also I think it's better that the dev builds solid foundation for the game and its systems now instead slapping together some half-baked sex scenes just to please the audience and then few years later starts remaking them with all the new things they have learned since then. Plenty of porn games are stuck in that limbo for all eternity.