People like Maher are strange. They promiscuously make attacks on religious people yet whinge at the first sign of racism or homophobia. Their philosophy is, "bigotry for me, but not for thee".
Race and sexual orientation aren't choices. People are what they are.
I was born a Catholic. I was raised Catholic. By the time I was 21, I realized Catholicism and really, all religions, are bullshit.
I made a choice.
Other people choose to continue to believe in nonsense. That is their right.
If they want to believe a man made of wafers who was his own father died for their sins 2000 years before they committed them, have at it. If they want to believe in Magic Underwear or Body Thetans or whatever silly nonsense you have out there, knock yourself out.
But people should have the right to point out how these are silly beliefs, and they don't become less silly because you give them a little gilding and a little ritual and call them a "religion".