I freely admit that I did not even look up the review itself, just what you had quoted. So I don't know what else this person has reviewed.
Didn't expect anyone to coddle him. Criticize him for giving the game 1 star when he found the renders attractive. Point out that complaints about an unattractive MC are rare here (I have seen plenty of complaints in other forums). Maybe I missed it, but you basically said nothing more meaningful than, "dude's full of shit." An opinion you're welcome to hold and express! However, it does sort of come off as "you don't like my favorite game, so you're a poopyhead" - it doesn't add much to the conversation, and feels a bit juvenile (though certainly written with a clever conceit; again, I allow that I may have missed some stronger relevance between your comments and the reviewer's).
A few notes: I really enjoy the game, and look forward to every release; I really don't generally view this forum as toxic, and would go so far as to say that the regular contributors are not the ones making the most "toxic" posts; and, if I was unclear, I don't agree with the points the reviewer made (and don't think he expressed himself all that well).
But, I didn't see anything complaining about this being a harem game. The reviewer seemed to indicate that the renders were nice, and the girls looked good, without any complaint about the number of them.
I see 4 basic complaints in his review:
1. He doesn't like the MC's appearance or personality. Not an opinion I share, but everyone's entitled to their own.
2. There's no real underlying story, it's just pretty much a "fuckfest". I believe this is a point no one, not even Moonbox himself, would disagree with. If that's not your thing, then this won't appeal to you. Eminently valid in a review.
3. All women seem to fall easily into the MC's arms. Certainly, there are exceptions (Allison, Amy, Annabelle, and Polly; first two love him, but haven't jumped him (yet); last two initially can't stand him), but, again, if you're looking for a game where the MC works hard to romance women and slowly convince them he's right for them, this may not be the game for you. Still, given Allison and Amy, this would have been a point you could have thrown back some challenge on.
4. The choices in the game don't provide him the sort of control over the story he would expect. Here's another point that's arguable, as it fundamentally goes back to the "fuckfest" point. Given there's little overarching story, there won't be decisions like should you betray so-and-so's secrets, or should you go to work running your own garage/repair business, or as an electrical engineer at the local paper plant. The choices you have are indeed related to who you will or won't get involved with, what activities you'll perform with them, and what should they call you.
Now, I still haven't looked at this guy's reviews. Maybe they pretty much follow a cookie-cutter template. Maybe the reviewer lied about his opinions (which seems pretty pointless). The review appears to state personal opinions about some aspects of the game, but really doesn't seem to portray the game as something other than what we all enjoy. That he does not enjoy it is his prerogative (and his loss, in my opinion).
The review system does allow feedback. You can post a review that's basically the opposite of his, refuting all his points whether you choose to reference his review or not. And you can report reviews: if this guy has reviews of only harem-tagged games, has reviews of 35 of them, and they're all one-star reviews (or even all but one), that's a sign that something may be off. If this guy was unreasonably rude or abusive, you could report him for that. Thing is, as I read it, he wasnt; I wouldn't expect a report on that basis to get you anywhere. And, honestly, if I saw a review that read like your necropsy, I probably would report it as having nothing of substance to say, and saying so in a fairly offensive manner (as opposed to a review that just said, "I didn't like it," which isn't particularly helpful, but doesn't accuse the game (or, by implication, the dev) of being full of shit and impotent). And that's why I said your necropsy felt like it was a bit toxic - no real reason for your disagreement, just fancy name-calling.
Sorry if this should have been a DM; just thought others might also benefit from my explanation of where I was coming from. If I bored everyone, my apologies.