If the horde... thought that killing all the undead was morally correct... they would have killed them a long time ago.
Thus it is an alliance POV that killing all the undead is morally correct and thus not genocide.
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You are mistaken if you think that I am trying to defend the acts of Sylvanas... She is genocidal...lets kill her
You are also mistaken if you think I am trying to defend the atrocities committed by Sylvanas... They were atocities... lets kill her and any who stand with her for them
You are also mistaken if you think the alliance has not attempted to commit atrocities
You are also mistaken if you put all the blame on orcs(as a race)... this is as mistaken as putting all the blame on the Draenei(race)
The truth is that both sides have done terrible things...So what do we do now??
Well we either do genocide on the Horde(as punishment ... either in the form of slavery or in the form of killing them all or in some other form)
OR
We accept what is true.. we accept the atrocities committed...And we find a way for us to live in peace for the future.
I prefer the latter