I've seen a lot of bad reviews due to the supposed "political nature" of the game. I guess it's just a matter of points of view: to me, the game tells about how the pain that isn't mourned still lives inside us, and if ignored it destroys us from within. To me, the protagonist becoming a superhero, something indestructible and invincible, represents the person who has suffered a loss and, instead of elaborating it, closes himself into an armor apparently indestructible, to prove to himself that he suffers no pain and he can do wonders no matter what. But the inevitable downfall, as I said before, is the result of ignoring the pain, and letting it fester inside the soul. Some things can't just be ignored and buried under a false sense of invincibility, like a child that has hurt himself but holds back the tears and says "I feel nothing".
It doesn't really matter that his significant other is a man, or a black person: the message is something else, imho. But as I've told at the beginning, it's just a matter of points of view, and having everyone a different point of view, of course there will be plenty of interpretations. Mine is what you have just read.
I gave it three stars (two in the vote) because the realization is pretty poor: the player simply walks left and right on a flat plane, there's only one big scrolling level, the "losing-power" mechanic is good but is not well developed (unlike other games, like "Persist"), for the player doesn't face many odds that challenge his problem (he only jumps over increasingly smaller holes, and dives through a pile of snow). It could have been a more complex game, but it ended up being just an "interactive story" masked as a platform.
TL;DR: good the idea, poor the realization. Work more on it, the existential issue can't keep the game up only by itself.