Now, i wouldn't call other ratings braindead. Rather, i would call the game itself polarizing. Some things it does in unique and interesting fashion for me would be completely insignificant to some other types of people.
However, i'm one of the people that value unique games like that. It's neither a harem nor ntr, it's closer to a game like Rance 1-2, about some cool guy's local short adventure, with unexpected situations, rather than a set-up for hentai.
You play as something like a super-agent in medieval setting, an elite knight guy who's prepared for it all, so don't let the eyeless sprite fool you. All events don't overstay any welcome, or even expectation, because you will have no need to stay in the town any longer than story requires you to. They align with your advancement, set up to be logical. And so is "NTR" and "harem" elements, all done on the way to your goal - you can get cucked for making quite well placed mistakes, and you encounter more girls on your way as well, with none of that being focused upon by the dev. Is it avoidable? To both - only partially, so get prepared to sometimes be an alpha-male, yet also to have your girls at least touched by other males, even with the very best choices.
What i appreciated is that talking to random people around has some meaning - it might give your group a reason to talk about something, spend time together, and earns their affection, so you don't just walk around listening to boring NPCs for barely any reason.
Combat is kind of like a joke, or a power fantasy - since you're playing as an elite knight, you START with level, enough to beat the final boss of that game. It's not like these games that hype protagist's reputation, only for him/her to be level 1 at start , MC is very strong right away. Meaning it's very hard to lose to any mobs or bosses, even with a shittiest choice of equipment. Secret optional boss and final boss are the only enemies that can possibly threaten your party.
The main downside is that there's not much content. Dev says it's his first game, and god damn it i'm waiting for the second one. Even as his first game there's clearly a lot of thought put into it, as is apparent in behind-the-scene elaboration on characters, in recollection room.
TLDR: Game isn't about NTR or harem, it's more of a game for people who enjoy stories like very early Rance games. But does include both, with MC being mostly a capable chad.