Here's the original context:
"In fine, we have the most sensible Concern for the poor distressed Inhabitants of the Frontiers. We have taken every Step in our Power, consistent with the just Rights of the Freemen of Pennsylvania, for their Relief, and we have Reason to believe, that in the Midst of their Distresses they themselves do not wish us to go farther. Those who would give up essential Liberty, to purchase a little temporary Safety, deserve neither Liberty nor Safety. Such as were inclined to defend themselves, but unable to purchase Arms and Ammunition, have, as we are informed, been supplied with both, as far as Arms could be procured, out of Monies given by the last Assembly for the King’s Use; and the large Supply of Money offered by this Bill, might enable the Governor to do every Thing else that should be judged necessary for their farther Security, if he shall think fit to accept it. Whether he could, as he supposes, “if his Hands had been properly strengthened, have put the Province into such a Posture of Defence, as might have prevented the present Mischiefs,†seems to us uncertain; since late Experience in our neighbouring Colony of Virginia (which had every Advantage for that Purpose that could be desired) shows clearly, that it is next to impossible to guard effectually an extended Frontier, settled by scattered single Families at two or three Miles Distance, so as to secure them from the insiduous Attacks of small Parties of skulking Murderers: But thus much is certain, that by refusing our Bills from Time to Time, by which great Sums were seasonably offered, he has rejected all the Strength that Money could afford him; and if his Hands are still weak or unable, he ought only to blame himself, or those who have tied them."
Franklin was sympathizing with the Frontier settlers' reluctance to agree to be taxed indefinitely for some temporary safety and he was throwing out the warning to show that he understood their concerns fully. He goes on to say that if they don't agree to this, then they keep themselves open to attacks, so they have a tough call to make.
Your NPR source is right about the wider context of the quote, but wrong about it's meaning. It means exactly what everyone has always thought it meant, and Franklin meant it that way even in this context.
Liberal academics tarnish their credentials with stuff like this.
What's next? Jefferson had slaves?