The problem with that line of thinking is that there are very logical answers to those questions and most people don’t respond “you’re a retard”. ALL of those standard questions have been answered over and over, including in a couple of links shown on this thread.

People who believe the moon landing was a hoax, or in flat earth, or “9/11 was an inside job” or any of those clearly disproven conspiracies cling to them in the face of overwhelming evidence because they are bought in emotionally. It is like they would be admitting they were fooled if they accept reality, and they just don’t want to admit they were wrong. Those folks will never be convinced for that reason.