The article mentions a new Borat couldn't be made now, and the footnote, probably added after the new one came out, excuses the author being wrong by saying Sasha Baron Cohen already has popularity and support so could get away with it.

It's simpler than that though and fits other points made - the new Borat was actually a lot more politically correct and followed the American ideology that has emerged recently, adding a woman character and going after Trump republicans.