Depending on one's viewpoint you could claim he is antisemitic, antimuslim, or anti Christian.
He's just antistupidity which what all theistic religions are, stupid.
Most Muslim's just want to be left alone to subjagate their women in peace. Bill Maher
Mormonism is the silliest religion there is, wait Mormonism isn't a religion. Bill Maher
In one part of the above linked video Maher does a reverse Baptism on Mitt Romney's late father in law who was very outspoken on how religion was stupid and whom the Mormons conducted a Baptism on after he was dead.