Yes, I remember discussions about beings with this idea of neutrality being in fact elements of Chaos. What can be more chaotic then this behaviour? It may make sense for the organisation at the large scale moving to moderate the world, but at the level of the individual it equates to insanity. A person who may act one day to build an orphanage, and then a week later burn it down?
And a King would be well advised to kill any of this order who entered his kingdom, their advice is not for his benefit but the Balance. Only a fool with the same world-view as them would heed their advice.
Many games draw moral lines in bold colors, where the real world is not so easy to categorize. Suppose that the player characters are faced with an overwhelming foe? Even unsavory allies such as orcish barbarians may be better than no allies at all. More disturbing, these allies may be honestly friendly to the PCs when all is done, overcoming barriers of race and religion. Will the PCs remain friendly with the bloodthirsty humanoid tribesmen when their mutual foes are defeated? Some would expect the tribes to betray them, but after the characters have honestly won their respect, even orcs may not be all bad.