Well that's just the problem: no matter what they agree to as a definition of "kinds", there will always be huge discrepancies because it's an awful and baseless classification system. Even proper scientific taxonomy is difficult because the lines between species aren't actually clear-cut: they are as blurry as the lines between the colors in the visual spectrum.

The fact is that once you start trying to come up with a system for defining kinds that narrows down the selection to a reasonable number (Like maybe 20 kinds), you lose the nature of the myth.

And here's one more thing. the Mythbusters only test the really absurd myths on a few occasions, and even then they try to do justice to the myths first. But these myths are always withint he realm of "first-glance" scrutiny. They don't test things like "Can you fit a person inside an eggshell without breaking it", because no matter how often you might find some morons repeating it, it's just too damned absurd to test without failing to do justice to the myth, or just holding up an egg next to the smallest person you can find and saying "myth busted".

Something like this is just too large. Of course you can't fit 10,000 kinds of animal on a bot of this size, and all a scale test would consist of is getting little blocks representing the amount of space those kinds would require and then putting that huge block next to a little tiny scale boat, and saying "MYTH BUSTED."

It's not what the Mythbusters do.