It is what I meant, why would you want to strap a wrist to a bar with the tendon fully extended and reduce assistance from the forearm muscle?
what he is saying is you do not have to have one arm underhand grip, which ends up up being a risky movement for the bicep.
and what I am saying is that you do not have to squeeze the bar as hard when you are strapped and your back gets the burden more then your hands and arms, from wrist to delt, minimum pressure with straps.
I notice this when I forget my straps at home after a back workout, I lift 30% less on biceps and 30% less sets cause they are already worked when I forget the straps.