One can only assume that since "dispersed" means spread to spread out or separate, that no spread out camping allowed.
In normal person speak it would mean to camp in the vicinity that is already established. Ie don't go spreading out all over in fresh untrampled areas and destroying the vegetation.
As much as I hate the over regulated BS we have to deal with, it looks like an arid outback region which can't sustain continued abuse.
I regrettably support their request.
Why the hell don't they just say what they mean..........?