Maybe he was, but his team was not, which is what backfired on him.

"Bluffing" about killing millions with active nerve agents while surrounded by armed men who are willing to kill millions with active nerve agents ain't a "good guy" kind of move. He was either lethally stupid or stunningly reckless, but either way, he assembled a team ready, willing and able to commit genocide.

That knocks you out of "good guy" territory.