I am a non-native english speaker too; I guess I bristle at the the reading that this man isn't in control of his english when he writes with obvious proficiency, a reading I suspect, would not at all be in question were his name John Foster Edwards, or Henry Wickham or whatever Anglo-Saxon name you wish to replace his name with.

I see your point though. I think he does use words in ways that native speakers do not use, but in his anecdotes -- I think he's actually playing up his Chineseness for the comic effect, and he's very much aware of what's happening.