Hatred is a funny thing really. It is just like love. You cant create love nor can you create hatred, you can only influence what is already there. Just everyone has love, everyone also has hatred... seething, wretched, beautiful hatred. And as long as everyone has that hatred, no matter how little it is, I need no crown to rule you.
I am also Glad they hardly show Sombra because he would end up being a generic hubris filled villain like the other two. Discord's defeat was pathetic and NMM should have killed or at least imprisoned Celestia