I agree with your point but I think you may have misunderstood Mestroyer's comment (totally understandable, as I found his comment difficult to parse, myself).

I take from your response that you interpret Mestroyer as referring to a scenario where there's nothing in my work to criticize, and I ask for feedback and receive praise, and correctly interpret the absence of criticism as evidence for there being nothing to criticize.

I don't actually think that's the scenario Mestroyer had in mind, based on his second paragraph. (Or was it? If so, then he ought to adjust his terminology, because the term "empty praise" is not appropriate in that context.)