Too cowardly to commit suicide? Because Mao's a wonderful source on what's really going on in someone's mind, what with his calling Shirley a whore and such! Nothing else indicates that. All of 'zaku's internal monologue actually indicates the exact opposite.
But naturally, people will take the crappy source's information if it means more ammunition as a means to rage against the moralfag character because they're edgy and dark like that.
"Fuck everything up" is right, though. My favorite part is when people are still defending him for "giving us hope, desuuuu~" when he admitted right in front of Kallen that he wants to take over the world. And she fruitlessly ignores this directly after.
Both sides are hopelessly stupid here, but at least Suzaku won't have the world enslaved when he's done. It'll just be really inefficient and useless.
Don't take this as Suzaku defense, this is more "Lelouch is just as much of a dumbfuck."