Escapism is always for people unhappy with a certain element of their life, that's why their escaping from it(duh?). A story structure overarching a whole manga isn't a low bar to set if you've read manga for any span of time at all. I feel like I'm having to repeat myself at this point but manga very frequently function on a week to week writing schedule and therefore have no long-term planned story structure. Story structure along with character development and motivations that conflict is what makes this more than average to me. Lust is a desire for sex, it does not encompass all of sexuality. There's much more to sex and sexuality than pure desire and that kind of myopic view makes me believe that you don't really have the capacity to examine any of the themes in this manga with more depth than a puddle. You act like you know exactly what the author is intending with the sexual content but there is no possible way for you to know that, so I'm not sure why you even brought it up. The nature of rating is that it is indeed subjective to a point, the subjectivity should have a defensible rational that would stand to scrutiny, rating bombing it because you disagree with the themes in question is not defensible. That's like saying you can watch a foreign film and then give it a shit rating because you didn't understand the language. The difference between a 10 and a 1 is that I can see how someone could construct an argument for this being a 10 and I would maybe believe it, I see no way someone could construct an argument for this being a 1. People in the comments even admitted to rating bombing it because one of the characters was cheating, how is that a reasonable criteria for a rating? Just look at the valley of ratings between 7 and 1, how is that in any way shape or form not a clear indicator that the 1's are just angry purists? I'm not arguing subjective qualifiers are complete moot, just that clearly you don't seem to be open to accepting any argument that this has substance beyond sex, so a subjective analysis of themes is functionally moot point in the discussion. The only criticism you presented is that this has nothing beyond sex and I complete disagree, and have stated exactly what I see beyond the sexual elements. From what I've noticed, all you can see is the sexual elements so I don't think there's any common ground here to show you that there is more beyond them, you see literally nothing but boobies and penis here and I cannot make you see what you don't want to.
I'm done talking about this ad nauseam, this is a non-starter discussion imo. I've made it clear(even though it was already just by reading the comments) that this rating was bombed and I don't think it deserved it, but you can personally rate it what you want with whatever criteria you want, it's your prerogative. Spoilered cause this is lightly off-topic and in case I slipped plot elements or something