To be fair to Daken, he genuinely is trying to improve and do good. He's turned his life around and now works to save innocent mutants. And that goes with most characters; if we judge characters by their past, and not their current attempts to do the right thing and do it properly, then every character would be stained.
Characters like Apocalypse are intentional exceptions, because Apocalypse's methods were still seen as cruel. He was still seen as extreme and characters (aside from Rictor, who's obsessed with dick-riding him) don't like what he's doing. He's not like Daken (whos making a change for the good) or Exodus (who plays by the rules for the benefit of his people.)