That's an empty advice. Vast majority of people will have no desire or time to "send a PR" after seeing it for the first time. And those who will be inclined t

That's an empty advice. Vast majority of people will have no desire or time to "send a PR" after seeing it for the first time. And those who will be inclined to do that don't need a public reminder to that effect. But their feedback is still valuable and the "do better and send a PR" remarks achieve nothing but alienating people by looking dismissive of their comments.