i don't care about the book for this conversation.
Paul is the savior of the fremen. He brought them from hiding to running the planet, thru his special training and magic powers. They worship him for saving them...i mean...it can't be more clear of that. Even if he does that as a heel or it is a critique...he is unquestionably the white savior of them...
even if youre only going by the movies - paul is a dude that is just stepping into a role of a "savior" . One of the main point was that the Freemen religion stated that their leader would come from another place. Yet one of the main beefs between Freemen is that those that were even religious felt it would be a person who was born among the Freemen....
and the Freemen arent hiding at all - theyve been on DUNE for thousands of years -as long as spice has been used to explore the galaxy for over 10000 years ....the movie tells you that - The Freemen dont care to contact or deal with anyone OTHER than those on DUNE
that ONE tribe of Freemen - Seitch Tabor - has been kicking ass of anyone that came to THAT ONE PLACE on the planet that they harvest spice ( Spice is ALL OVER the planet not just Arrakeen )
again pointing out the arrogance of everyone - The Empire, The Spacing Guild , Benegesserit , and the Noble houses...no one saught to do anything beyond that one patch of land on that planet for 1000s of years which again illustrates the ultimate theme which is about power and myopia ....even AMONGST the Freemen.