That says "waters", not land gathers into one place. And anyway six-thousand years or so is not enoug for one continent to become many. Case closed.
Van what's-his-name is a joke, and everyone in the physics community knows it. Relativity is true. Just because we don't fully understand it yet does not falsify it. We understand most of it, and have tested it. I say again, even if we got the speed of light wrong, there's no way we got it so wrong that we'd miss it if the universe was young. Do your species a little more credit. Space might not be a pure vacuum, but it's not like it has an atmosphere.
Carbon dating has its limits; fair enough. It is not the only way to date things. What matters is it generaly sinks up with the other methods.
Are you argueing in favor of a young Earth or against it?