Instead, he said: "I realize that supporting only Ascii is uninternational to a point that's almost offensive, like calling Beijing Peking, or Roma Rome (hmm, wait a minute). But the kind of people who would be offended by that wouldn't like Arc anyway."
There was no reason to take a swipe at the "kind of people" who care about internationalization, which is to say:
* people who are not mono-lingual anglophones
* people who want to build real-world applications
Why shouldn't people in those categories be interested in Arc? Why should they be excluded? And why treat it as a matter of political correctness rather than just a technological decision?
Paul threw the first punch and the blogosphere punched back.
Furthermore, his general tendency to divide and conquer the programing world in that way is why there was already a huge pool of haters ready to pounce on him. Every essay of his implies that there are people who get it and people who don't and one can distinguish between them by seeing which people agree with him and which do not.
He only needed to say: "Arc does not yet support Unicode" and the whole thing would have been avoided.