There is criticism and criticism. Why should DPC be happy about hateful criticism? Let me tell you something. No one is happy about that kind of criticism and consequently won't handle it well. What's more, criticism often degenerates into insults. No wonder DPC defends itself against it. Who wouldn't do that?
It depends on how and what you criticize or write about. DPC has clearly written so he won't change his BaDIK story for anyone. I think to myself, so that he will never change the basis, that is, what he wants to have in the BaDIK story. However, he also likes to read theory from the fans. That's not criticism. I'm thinking so that DPC will be inspired by that theory and incorporate one or two things he's read into the BaDIK story without changing the basis of the story.
Let's move on to positive criticism. DPC has written himself to take on board and think through fans' suggestions regarding the gameplay, not the story. I still remember very well that it was written here in the thread that it would be better if you could use the keyboard for input in the English mini-game. Oops. In EP10 the input is done with the keyboard and no longer with the mouse in the English minigame. This is proof that DPC has made improvements to the gameplay, probably due to positive criticism from a fan.