Again, that would be under the assumption that they had any inkling that it was an offensive word in other regions, and logically, if they did have any inkling, they most likely would have avoided the word entirely.
See where this is going? You've already shown that Hasbro tries to be culturally sensitive when they are aware of a problem. If they didn't know there's a problem, how could they respond to it? Why would they do a google search for a word that, to Americans, seems perfectly reasonable?
Additionally, their lawyers and the US Trademark registration office evidently didn't see a problem with trademarking "spastic" either, further demonstrating that generally Americans have no idea that "spastic" is now considered to be an offensive term in some countries.
Is anybody else going to attempt to argue that they did somehow know that spastic was offensive but were too lazy to double check or simply didn't care? Because that would be a ridiculous argument.