Well yes on the desert it is suicide but Arrakis does have cities that are safe from worms, so they could have shields there.
But yeah
@Agent23 more likely Paul is going to be against the U.S. interests since he will be making an empire and the U.S. Imperial interests in the area don't want a unified middle east. And Paul has coopted religious messianic symbols for himself. He became Muadib for the Fremen, it's not too far of a stretch for him to try and become the Mahdi, the two archetypes are close enough for each other.
en.wikipedia.org