In your example, the belief in Santa Claus is the conspiracy theory. I.e., Santa Claus is the overarching explanation for why people around the world get presents on the same day.
No, you have it turned around: To a child who trusts their authority figures (their parents), the belief that there is no Santa Claus is the conspiracy theory. I even remember this as a kid. The other kids who didn't believe were either naughty little children or (as I grew older) might be on to something.
Eventually the belief has to end because people grow up and presents don't magically appear and milk and cookies don't get eaten if left out for Santa.
This isn't true of government conspiracies and media lies. There is a reason your government classifies things for generations that no reasonable person would think needs classification. They are lying. And in the USA especially, questioning your government ...especially on the big questions like who killed JFK and such is considered a "conspiracy theory". It's like many Americans are little kids who trust their government to be their god. A surrogate for lying parents who teach Santa - just much larger in scope and with a lot more resources.
Fear and a certain self-congratulatory narcissism underly so much of conspiracy theory-ism : Some people can't handle the thought that bad things can happen to them or the people they love, so no one was killed at Sandy Hook or Parkland. Some people can't stand the thought that others are financially better off, so that's due to a Jewish conspiracy. Some people just need someone to blame, so they think the government is putting stuff in the atmosphere through contrails. Some people apparently can't grasp the concept of gravity and are afraid of falling off a round planet, so they believe the earth is flat. And some people get off on believing that they are smarter than most everyone else, as evidenced by the "fact" that they have figured out "the real truth."
I think it must be very uncomfortable to live with that much fear. The problem is that, in many situations, that kind of irrational thinking causes actual harm to others.
I don't live in fear, you've got this turned around too. I have the courage to question narratives and come to conclusions on my own without fearing people with your mindset. You fear standing out. You fear crowd disapproval. I don't give a **** about those things. I like truth and despise being lied to.
Oh, and about the Jewish conspiracy/money being a result of envy. Try telling that to Henry Ford, who was extremely successful and who authored the book "the International Jew". Oh wait, I forgot. This isn't part of the bs US public/government education I got or the corporate media that muddles US minds...sorry...carry on
Or try Nicola Tesla...who stated that the stars are attached to the firmament. You know what that means right? He didn't believe in space. This is the guy who invented so much, not least of which is the alternating current you use. But no, he must have not grasped the concept of gravity to make such a statement and call Einstein's theory of relativity bunk.
Hear about all this watching cnn, abc, nbc, nightly news, business week or any other corporate news outlet, corporately sponsored program or in your government indoctrination?
Well no, of course you didn't. My guess is that it's too hard to go against what amounts to probably a lifetime of being steeped in Grade A USA garbage propaganda. The government you got when you let the usurers take over your money supply, push the country in world wars, and run it's education and media. THAT government.