Akama really is. He is the good guy now, he secretly joined good guys and now plans to destroy Illidan.
Well most people think that draenei suck, is because they fell on a space ship(blizzard tried to make it more fantasy then sci-fi, but its still too much). Draenei are actually a pretty normal race, without Naaru technology. They have pretty normal buildings and cities. Humans from Alliance Expedition actually met some draenei, and even offered them to go to Azeroth. The draenei said that maybe they will meet again once, and that they cant go to Azeroth. They belong on Draenor. They had an alliance with them.
Plus draenei hate orcs, and worship the Light, as humans and high elves do. Blood elves whos kind sabotaged Exodar, and killed many Draenei in Outland, plus they feed upon fel energy. Not to mension Forsaken. And on the other hand, dwarves and humans who worship the light too and peacefull night elves who helped the draenei in the first place. Their choise was'nt a hard one.