At the same time - changing data values not stupid? We may differ on this point but I believe it's insanity. I'd love to see NULLs honored as well as constraints.
That said - 1/0 = NULL is on par with Javascript silliness.
Finally, it's easy to characterize my comment as FUD but Oracle has a habit of using Open Source systems to its advantage. Why else would they buy MySQL? And the licensing is not as strong as you may think.
Either way - it's very argumentative and I'm happy to agree it's unsure at best.