Believing in a god isn't a problem though. It's having prejudice / discriminating / oppressing / segregating / misinformation in relation to science etc on the basis of mere beliefs / organised religion that's a problem. They aren't the same thing.
Is it morally objectionable to teach children lies? That is the main issue Dawkins has. He doesn't care about adult's beliefs, he cares how children are educated and brainwashed into thinking evolution doesn't exist, together world us 6000 years old, dinosaurs didn't exist. There are school districts in the US that want to ban the teaching of evolution, or make sure children spend equal or more hours learning about intelligent design and present ID as an equal or superior "theory".
I'm very much with Dawkins on this. Adults can believe in whatever they want but it is morally reprehensible to brainwash children with known lies and conceal the scientific truth.