No. the bags are conductive (inside and out) so static has no chance to build up. Also means as soon as you touch the bag, any potential static is equalised between you, the device in/on the bag and the bag itself. no difference in potential, no problems. I'd never run a component sitting on a bag, they are conductive, so could short something out when there's power flowing through it. If you must run something not in a proper case, use the cardboard box instead.