I'm not judging. You are free to like whatever you want. As for "why people care?", I care because of two reasons.
First reason is, just like everyone else I want a good fucking porn game. And guess what, these good porn games must include gameplay mechanics because they are supposed to be a game. As you can see, I prefer my porn games to actually have gameplay mechanics in it, even if they are nothing complex. Just to be clear, I don't expect any porn game to have mind blowing gameplay mechanics. I'm also fine with just a little bit of gameplay. And this "game" nailed the porn part but it fails horribly at being a game. This is so frustrating, especially if you consider the second reason.
Second reason which is connected to first reason is: this "game" is literally described and advertised as an actual game but it is not a game. Even on patreon this is the first thing you'll see: