“Our resources are limited, fear is all we have” is literally Paul rationalising terrorism
There are two kinds of dune fans.
Those who think Paul is a good guy, and those who read the second two books
He’s still not a villain, like some like to say, but definitely not the good guy we all think of when we use that term. He’s a kid who was put into a horrible situation with no good outcome. He sacrificed his humanity to try to guide the rest of humanity on the best path. Humans were just flawed because they wanted a glorious leader and they needed to learn not to trust someone with that much power.
Frank was extremely homo phobic as well as racist.
You see him come to terms with the former in the fourth book.