Totally different ...
It doesn't matter if we really landed on the moon or not because, as a world, we believe that we did, so...we did. Just like Jesus...it doesn't matter if he really existed or not because, as a world, we believe that he did, so...he did.
Unlike religion or spiritual journeys which attempt to explain many aspects of life and creation that our society cannot understand and cannot explain ...
Whether we landed on the moon or not is a question of if it can be understood or it can be explained, but an exposure of the segment of our society that cannot understand and cannot explain the basic concepts involved. Anyone who has a decent understanding of 18th century physics, which is taught at the high school level in the US and most western worlds, laughs at the basis in which people make claims -- largely that too many people have a BC-era, Greek philosopher Aristotle level assumption on air and physical interaction. Adding in two years in an engineering program only solidifies further explanation of the full mechanics (e.g., dynamics) of more complex theories, such as the "wobble" of Alan Shepard's golf ball in Apollo 14.
It's the same on the conspiracy theories of 9/11 and the accusation that the buildings must have been blown up because kerosene cannot melt steel. Even foundation mechanics (e.g., statics) easily explains how temperature can weaken steel and even cause it to bend if different support in a truss is undercut, turning an end with a load into a fulcrum at an opposing base. The leading engineering organizations like the ASCE and NIST can release a report trying to explain these elementary concepts to the overwhelming majority of Americans, going into detail and using actual materials from the collapsed buildings, and people will just ignore them and go back to their base assumptions in ignorance.
In a nutshell ...
While some people look to Jesus to fill a void of knowledge of mankind in general, those who look to Moon, 9/11 and other conspiracies are looking to fill a void of knowledge of their own only, but mankind already has (and they failed to educate themselves of).
It's the same thing on the environment as well. As I regularly warn people, popular environmentalism is more of a church where people blindly believe concepts which have absolutely no basis in science and engineering. That's why nothing ever gets solved, because they end up hurting the scientists and engineers that are actually trying to reduce our human footprint and build environmentally sustainable solutions. It's not "save the planet" but "sustain the planet," or one should just stop using any and all technology, let alone stop doing things that "make yourself feel good" and actually start coming up with solutions that make less of a footprint.