All people think dogmatically. The only difference is what the ontological commitments and methaphysical foundations are. Take out God and people will fit politics, sports teams, tools, whatever in there. Its inescapable.
Dogmatism is a spectrum and for too many people it's on the animal side of the scale.
All people think dogmatically, but religion does not prevent people from acting dogmatically in politics, sports, etc. It just doesn't. It never did.
Under normal circumstances I'd consider this a nit and decline to pick it, but the number of evangelists out there arguing the equivalent of "cure your alcohol addiction with crystal meth!" is too damn high.