[This is not an answer to your main question. This question was closed by the community, not by a moderator, and I am watching this question to learn what the community wants.]
However, I will not that, had the question remained, I would have asked you to provide some references to support notability - that is, evidence that the claim is common or has been made by someone important.
I think there are two reasons for this:
If I am going to spend time researching an answer, I want to know that it will be worth it - that the claim is something that people believe, not just the result of a drunken discussion in a bar that will be forgotten in a couple of days.
When it comes to weird claims, I want to help rid the world of the false ones and, even better, convince people the true ones are actually true. What I don't want is to do is reward people with reputation points for making up new weird claims on the spot.
I don't think I am alone in the community on this.
Fortunately, providing such evidence is normally a simple Google search away.
Your first 2800 BC rumor was also insufficiently notable, but within 45 minutes of you posting it, someone had posted in the comments a reference to the claim being made by a notable person, and I had edited the title to bring it back to the claim in that reference, so in that case, the community had your back!