The entire episode is a thinly veiled mockery of beliefs about God and anything supernatural. But two interesting moments from Captain Picard vividly illustrate the problem this anti-God view creates.
In the episode, a group of people on a distant planet have come to believe that Captain Picard is a god - "The Picard" - capable of bringing gentle winters, good hunting, and even raising people from the dead.
Captain Picard vehemently objects to the suggestion that he should go down to the planet and pretend he's a god, to rescue a captured crewman:
"Doctor, your report describes how rational these people are. Millennia ago, these people abandoned their belief in the supernatural. Now you are asking me to sabotage that achievement? To send them back into the dark ages of superstition and ignorance and fear? NO!"
The dark ages of superstition and ignorance and fear. What an achievement it'll be when humanity shakes such impediments to real progress!
But despite the supposed advances in intellect and achievement that take humanity to the stars, there is one thing they lack.