Is it actually possible to satisfy Metroid fans?

[A Black Falcon]

Yeah, that probably was an exaggeration; many people are liking the game. As for the complaints though, one major complaint is that it's a remake of Metroid II, which some dislike for its linearity and such. And then there are complaints about the graphics (as you mention), that it's by MercurySteam, the absurdly overdone waves of anger over the fact that it is a 3DS game and not a Switch game, etc. But you can never please everyone so oh well.

... But yeah, Metroid Prime 4, I really wonder how that will turn out...