No kidding! The code they can write are naive solutions which may likely slow down the code/app as it 'scales'. As a computer scientist, I'm not threatened by those whose entire development expertise is the boot camp that they went to (as some seem to imply in this thread). But I fear that once their boss asks them to 'make this faster', they'll have a much harder time doing so since they may not have the proper CS fundamentals (e.g. can they profile code and see if it reflects the general theoretical run time?). They may risk their jobs if their employers may start to think they don't have the actual chops they were hired for.