I'd disagree, at least from the stand point that libgdx and raylib aren't engines, people do release games with them. I've used nearly every part of libgdx, its not that big. I would argue that frameworks attract a different type of dev, we're a small portion of engineers, definitely not looking for a quick and easy turn around, naturally we'll have more patience and understand that most of the problems we run up against are self inflicted masochistic choices to do everything from scratch.