Everyone but the audience, that is.
I for one still remember Lelouch saying all those episodes ago that he would "become evil in order to fight an evil greater still."
Lelouch puts on a facade to appear as an ally of justice, there's no surprise there. The main problem is he doesn't seem to be as good at covering his tracks as he used to be.
And yes, I'm a big Lelouch fan. I just think Lelouch never, ever honestly claimed a moral high ground. That's Suzaku. Lelouch just manipulated the Black Knights into thinking they had a moral high ground.