He is flattered seeing himself replicated all over. This man speaks his language, another walks like him. A few others dress differently, but their acts are modelled on him. Imitation is the shortest route to success.
Diana is different. She finds it painful to suspend her thinking and speak a borrowed tongue. No wonder she gets pariah treatment, and figures on the negative list. They call her a loser.
She is the only one who sees they are trapped inside the House of Mirrors. The castle will blow away, when the deity falls, and hollows turn into self-igniting gaseous chambers.