Agreed. Just because you don't compare your model to another model doesn't mean you're hiding something and it's irresponsible to pretend that's the case. Perhaps the author should have run char-cnn against data instead of making baseless accusations.

On the whole, a lot of the arguments are realistic of ML in general. There is far too much focus on individual problems and the accuracy measure without enough focus on the interpretation of the accuracy, how well it will really generalize, etc.