Anyone who doesn't use qwerty keyboards, for starters.
They are kind of whiny, but they do have a problem. Google what azerty keyboard layout looks like and you will see the problem with hardcoded wasd controls. Xpadder is a good workaround, but it's not perfect. Rebindable controls have been an essential feature in games for decades now. Imagine if the game ran in 320x240 resolution in windowed only, and playing it on a 4K monitor. Still, I don't blame the dev too much since it is a small, indie game.