I think it's called self-deprecating humour. I don't know too much about this guy, but these quotes endear him to somebody like me who is learning as much JavaS

I think it's called self-deprecating humour. I don't know too much about this guy, but these quotes endear him to somebody like me who is learning as much JavaScript as I need to do the things I want to do, but didn't necessarily come from a CS background. He seems like he's questioning what is pragmatic by using a bit of hyperbole.