You can place your suck up opinion somewhere also. I take what he says as what he said not what I wish he had said or done. His nearly 7 years of actions fit well with Muslims. If he became a Christian at some point I can’t say. But by his own statement he was born to a Muslim father and raised by a Muslim stepfather so he was at the very least once Muslim.
He explains exactly what he meant only seconds later in the clip, and it is perfectly consistent with the context of the conversation.
His actions over the last seven years are more credibly explained by his being a leftist. There are piles of non-Muslim leftists who hold the exact same policy positions as him.