Finished the Story, Finally. I still Don't understand Dutch and Uncle's character.

You guys please don't come after my intelligence for this, promise I'm trying

I personally don't understand why the whole gang abandoned Dutch, yeah he was pretty much beefing with modern society, but would they have not escaped to some new paradise if they stuck with him? Did he not have the gang's best interest in mind? There's something obvious I'm missing.

And HOW does everyone just let uncle freeload (besides Abigail)?? He can work and shoot a gun, why is he the only character allowed to bs around the hideout? He seems very capable, and yet everyone treats him like a valued member of the hideout all the same despite how lazy he is.