People want to beat that game too, explore all the options included by the dev, because their only incentive to endure that scene is precisely exploring and beating the game.
I know, I know, they can try again, but that can be frustrating and feel pointless after a couple of times. When it all comes down to pure RNG, well, I don't really think there are many people like you playing this kind of lewd games, if they really enjoy RNG systems they'd be playing some h-roulette or whatever. I think people play H5 for its story and not for the RNG, so they don't like it that much when they encounter that kind of content. You like that, but according to comments not many people do.
And I know your next point will be that then people should just choose another route, they are plenty for those who don't like to 'swim'. And I'd say there are plenty of unfinished routes that will leave you almost as frustrated because they lead nowhere at this point of development. That's why people say 'my playthrough this chapter was about 15 minutes long'. Because that's what's happening now if you don't like free-roam and focus on any given route. Some players still like the game or find it interesting enough, so they want to make their experience to last longer, so they try some other routes, and then find other things they don't like it either. And there aren't enough incentives implemented as of yet to change that bad taste, except a vague promise of things getting hotter down the line if you take the hundred of needed steps right. And from slightly frustrating, the game becomes annoying, and people come here and complain. That's how I see it and how I think things will go down from here until a real ending is available.