That one was actually a mistake. He was getting inundated by a bunch of people at the time, and he responded to someone else instead of the one he intended. Granted, the original complaint was still asinine, considering they wanted him to change a core mechanic that was working perfectly fine.
The original tweet he was trying to respond to was about how "this game is broken, fix being able to stay in the air by spamming the chain move," to which his response actually made sense. The guy wanted a fix for spamming a move that does what it's supposed to, and he replied with its working perfectly, and that there's no fix for repeatedly hitting yourself in the face either.
All in all, it was people complaining for him to "fix" things in the game that were working as intended, and people just couldn't get over themselves, and how some of their opinions weren't going to work because they would be changing the entire point of the game.
It's like if I complained to Activision for making Call of Duty a shooter, and expecting my complaints about making it a sports game to change the core design of the whole game :/ That's a broad take on it, but it applies. Complaints about things being "easy to do" flew in the face of DmC being a game that had things what were easier to do.