They did NOT kill 60,000,000,000 people and depopulate entire planets with armies full of towelheads using glorified KNIVES. It's literally not possible no matter which way you slice it.
The Fremen didn't kill 60 billion people and depopulate dozens of worlds with their primary means of warfare being hand-to-hand combat with fucking swords.
Fuck off, Herbert you fucking HACK. IT'S NOT EVEN REMOTELY POSSIBLE EVEN IN FICTION LAND!