Without context, it looks like the interviewer was a jerk and ambushed him.
I've seen plenty of stalling like that on major news programs, and the interviewer always knows to move on (and possibly edit something in to provide context.)
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That being said, "who started what" and "who had what idea" are silly topics to obsesses about. It always come down to who put the long-term work in. I think Wales was "in the right" to walk off; or at least say something like "I can't tell the story accurately, so please move on to a different question."
I've seen plenty of stalling like that on major news programs, and the interviewer always knows to move on (and possibly edit something in to provide context.)
---
That being said, "who started what" and "who had what idea" are silly topics to obsesses about. It always come down to who put the long-term work in. I think Wales was "in the right" to walk off; or at least say something like "I can't tell the story accurately, so please move on to a different question."