So, thinking back, what was Kojima talking about when he mentioned he might have to leave the industry?
Here's his comment:
Kinda cross posting here...
I thought it was Child Soldiers.
Then I thought it was because he sort of
touched on the 'AIDS is man made' conspiracy theory, but I don't that is all that taboo.
Now I think it is the fact that he is talking about the English Language as a parasite, as analogous with globalization and American imperialism, and as a destroyer of civilisations and cultures. Like, Code Talker and Skull Face go all out in slamming it. That's a pretty bold statement for a video game to make, I think, and I can understand why someone from Japan might think that a taboo subject.
He is unambiguously saying that the English language's dominance is a cultural dead end. He equates thinking and our understanding of the world with language (a la Sapir-Whorf) and, in those terms, he is basically attacking the foundations of Western Thought and equating it with a parasite.
There is some irony then that this was the game meant to appeal to more Western, English-Speaking audiences.