On the contrary, the Dv does a great job. You just never understood what it was about. This seemingly lonely island has a landing stage for ships. There is a shelter with supplies, there is drugged beer, a hidden weapon appears. This is all very suspicious, don't you think so? So, the whole time there were indications that the game is more of a crime thriller. and rather not a "Robinson Crusoe", as they apparently expected. In addition, the game is a VN, i.e. an interactive film / book, with possible turns to events, depending on the player's choice. Including NTR, avoidable. In games like this, you slip into one or more specific roles without being the MC yourself. And you experience their stories, make the decisions, see where they lead. You experience their stories. That is the meaning of VNs.
So, what did you expect, another run-of-the-mill vanilla thing, of which there are already more than enough? The dv offers us good entertainment with a lot of sex. And his product is obviously aimed at more demanding adults, as it is generally the case with VN. And he does it job well. The worst thing he could do now would be to hear people like you and crush his plan. So, you don't like it, we got that right? That simply means that you are not Dv's target group at all. That is acceptable. And that's not a problem either, there are a lot of successful vanilla / harem games. These are specially designed for simple people like you. I recommend Treasure of nadia, for example. It's great in its own way. Or maybe better BaDik?
That is also a NV, but it is also more aimed at young people. And this is exactly what you want. Play something like that, enjoy.
Come back in a few years, when you have repulsed yourself and are looking for more entertainment / quality.
You´re welcome.