Taking responsibility would be admitting how wrong he was, sincerely apologizing and doing whatever he can to minimize whatever damage he caused. Imagine yourself married to him and ask if he took any responsibility.
He who knows the least obeys the best.
But the man has a wife confined to a nursing home. There is no scandal. I think the pictures are less of a comment on the sleazy political operative than the target audience who changed their minds based on such pictures.