That's a good point although I only hunt with a bow and the other bow hunters that I know are also pro 2a, constitutional carry, and own several firearms.
I also trust they'll use them if the need arises.
There very well could be folks that hunt bow only and own no firearms. I'm thinking specifically about anti gun states like Illinois. May not be worth the hassle for some folks.
Illinois' not as anti as people think and it's pretty easy to get a gun and hunt with guns there. Not as good as Indiana, but not as bad as it's perceived.