Define "the right thing." I'm not convinced at all that they believe they did the right thing at all, just the more convenient thing.
They deserve absolutely no credit whatsoever. Not one bit.
They don't care one bit about what that imbecile did; they care about the PR nightmare they're facing now, which is the only reason they took action. If there was no PR nightmare, Mitch Miller would still be a part of that organization and they would just continue with their lives.
Real change isn't succumbing to the Twitter mob and saying sorry sorry plz forgive us we understand your plight not really but plz forgive us we're so sorry, change is doing real tangible things without the having the eyes of the world on you, pressuring you into doing what you "should" be doing.
The Coyotes did what they believed was the right thing by selecting a player in spite of everything around him. What everyone believes is "the right thing" isn't necessarily a view held by everyone.