What would be the possible Mandela effect explanation for this? That the universes collapsed on each other and wiped out the world where fruit of the loom had a cornucopia but this guy just happened to find an artifact that phased through dimensions or something?

This is even worse than flat earth because that at least has value as a thought experiment on the implications of power lying about everything. This multi-verse collapsing around a cornucopia is like gay marvel shit