I don't think Blizzard did anything wrong here. Blizzard is a profit business. Staying political neutral is the key to keep its business running. I hope if a Chinese player say anything offensive to Hongkong during the tournament, Blizzard would have banned the player in the same way.
The rules has been set up before the tournament. Blitzchung should have known the consequence of his action. His goal is to draw the world's attention. And he did it.
If you are blaming Blizzard's ban, do you know that Github has banned the entire Iran, Syria and Crimea?
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If use legend spell: yes other way is no
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is very easy dude just mortal coil on goblin bome next defile last hellfire all face boom