As someone who actually bothered to sit down and spend the effort learning SQL, I agree. I've seen many colleagues in my career say "Oh SQL is hard/stupid/broken/whatever. MongoDB is so easy, it just works." and when pressed on whether they actually bothered to try and learn SQL, the answer is always no. Seems developers today are so lazy that we can't be bothered to learn a technology, if it's different from the ones we already know.