Isn’t magneto a mutant supremacist who thinks the humans should be genocided?

Eh...as with most situations like this: it really depends on who the writer is and what era you're talking about. Sometimes he's mask off mutant supremacist. Often times its framed less that he thinks non-mutants are inferior and more that he views coexistence as being inevitably doomed to failure based on all history and evidence and wants to end the war swiftly and decisively.

...either way, if Mutants and Magneto actually existed in the real world it should basically go without saying he would have a correct diagnosis on what the world trade center and global finance capitalism was doing to his kind. Dude would have torn the damn things down himself years ago.

Edit: Oh yeah, and Dr. Doom crying can only be explained as pure narcissistic jealousy Doom himself couldn't do this level of damage himself with all his sciency scorcery know how.