Technically, he wasn't calling JavaScript "BrowserScript", but instead using "BrowserScript" as overly-clever newly-minted jargon for client-side code in general, independent of language. Still, both that usage and the stated reason for it were pretty poorly conceived and distracting.
"overly-clever"? Not sure about that...
BrowserScript seemed to fit. I didn't expect to get whipped that much over it. Maybe I'll just change it back to JavaScript and add a note that this can be applied to any other browser side language. I don't quite see what the big fuss is though, to be honest.