Originally Posted by
Qualia
? Seeing that Illidan was ready to throw himself into a fight with KJ in Argus before TBC, and will be using himself as the jailor for Sargeras later (hope this won't be counted as spoiler since the datamined dialogue has been around for a while) - supposedly (in lore) for a long time if not eternity, I'd say that he's pretty fine with sacrificing himself. That isn't even something new: he also sacrificed his humanity (well, elvenity) for powers, partly for his own gain and partly to defeat his enemy.
Personally, I think a lot of people just either misunderstood what sacrificing means, or over-glorified the word. Sacrificing yourself is usually praised as a great act and all, but it's not the only form of sacrificing. The word simply means trading / giving up something gain other things. Sacrificing your followers is also an act of sacrificing, sacrificing some part of your bodies and take in a massive burden in your mind to gain power is sacrificing as well. Heck, people nowadays even ask others to sacrifice just one or two meals for hungry children. That's what sacrificing means, it's nothing that grand. I don't think it's right to chastise Illidan that he never sacrificed himself (and by this, I assume most people meant his life). Not every lives weight the same. The more important people shouldn't be trying to sacrifice him (or her) self over trivial matters / small victories unless they are stupid. You can easily replace random fodder A, replacing extremely powerful leader B is a lot harder. After all, many generals all over history sacrificed their soldiers to gain victory without even being on the battlefield and no one said anything about that. The question is just whether he would be willing to sacrifice himself when / if the situation call for it. Again, judging by his plan during TBC and what's going to happen at the end of Antorus raid, I'd say he will be.
All in all, Illidan's beliefs are to do anything for the Legion's defeat, even if it means sacrificing others or even yourself. In Xe'ra's case, it didn't apply. Illidan didn't think that's an act that would help to defeat the Legion (going by what he told Turalyon "There is no chosen one, only we can save ourselves"), so he didn't go along. His belief never was to give yourself to other beings (in fact, he just told Velen shortly before that to forge his own path). Neither was it to respect about others' freedom, though, he just didn't care and go about it in a might-makes-right manner. Thus, I don't see his action in the cinematic as hypocrisy. Double-standard, maybe, but not hypocrisy.