Just a little hypocrisy - that's all...
When the ashes are applied, the accompanying words are “remember, man, that thou art dust, and to dust thou shalt return.” A man of Willis’ hubris would do well to consider that message.
However, it’s a free country; he doesn’t have to respect Ash Wednesday and I don’t have to give a rat’s @$$ about the culturally benighted who celebrate Kwanza.