Not exactly a knockdown argument, but: if he was wrong about "something meaningful", Guzey probably would have added it to his list.

More generally, if you make a claim and someone claims you're entirely wrong, it should be surprising if they don't attack the parts you consider meaningful. If they wanted to publicly demonstrate your incorrectness, why wouldn't they attack the important parts? Either they can't, or they chose not to, but the latter doesn't match the apparent motivations.