I don't think people are mad as much because Samus is not isolated, but mostly because Miles Mackenzie seems to be a character that is totally out of place in the Metroid universe. His cheappy Marvel humour is totally outdated - not funny at all if you ask me.
Metroid is the kind of game that you need to have the right atmosphere in order to take it seriously, so an atmphoshere breaker is definitely a minus.
They are supposed to be in a hostile place away from civilization with their lives at risk, stupid jokes don't make any sense.
If he is just a 10-20 min NPC tutorial character who you forget for the rest of the game, then it's not as bad.
But if he is there for most of the game people are right to complain.
Overall game looks really really good, so I'll be getting it regardless.
don't mind my username, that was more than 10 years ago, I'm a different person now, amazing how people change ^_^
