Perry, your "facts" in your link are fairy tales. Re-asserting what was written in the Gospels doesn't make it true.
Let's just dismiss one of your facts right now. Although Paul does write of a supernatural experience, so do many others. Heck, many came here to JWN and claim an audience with Jesus-from-the-sky.
But Paul never met Jesus beforehand and doesn't write of any of the events concerning the man Jesus that are in the Gospels. He could have met Allah or Satan or had some good mushrooms. To take seriously, Paul's claim about 500 eyewitnesses, begs the question, "Eyewitnesses to what?" Today, calling it a fact that 500 people are eyewitnesses because someone wrote that decades after the events supposedly took place is not proper. Paul did not list their names and talk of their individual stories at all. I could claim 500 eyewitnesses to Zeus appearing 30 years ago in the forests of Europe. It would be a bit harder today to make the claim because of media and communications and people demanding to know the names of those people, but maybe a few hundred years later, people would just accept what I claim.
No information is provided concerning the "500" to show whether they had a visionary revelation or saw an actual appearance of Christ in the flesh, or for that matter- where this took place. Paul does not tell us if he was among the 500 or if he had just "heard" a story about them or from one of them, or if it was maybe just a circulating story among Christians. The story of 500 eyewitnesses is not part of the Gospels or the book of Acts. It could just be an overzealous preacher taking advantage of the poor communications available at the time to make checking his story difficult. Or it could be 500 Christians with completely different stories like Christians have today- "God cured my cancer." "God did not cure someone's cancer because God took his pain away and brought him to heaven." " God found me a job." "God kept me unemployed so that I would be forced to pursue my dreams."
No matter the outcome, all glory to Jesus or God and all outcomes are a result of belief and prayer and sometimes divine intervention.