It's embarrassing but in my experience many game developers are quick to denigrate Flappy Birds. I don't think it's restricted to /r/gamedev. We can speculate a

It's embarrassing but in my experience many game developers are quick to denigrate Flappy Birds. I don't think it's restricted to /r/gamedev. We can speculate as to why game developers feel the need to rip games apart, but ultimately I think it's amazing that Dong created such a hit and a shame that he's felt overwhelmed by the community's response.