If you want to criticize, first try imagining drawing something as good as this manhwa, but longer and on a time rush because some dude sent you the same message you just did:
it'll be stressful and exhausting, plus you might even not listen to the demands of the message cuz it's just one little perosn out of all your other readers.
In conclusion: have respect towards such talented people, and your previous comment is irrelevant.