The things you mentioned in your second paragraph are precisely why. Because there is no shortage of "devs" who took a month-long training course and think they

The things you mentioned in your second paragraph are precisely why. Because there is no shortage of "devs" who took a month-long training course and think they know everything there is to know about PHP, who will get the thing you're paying them to do mostly working in reasonable time. More importantly, they'll accept crap pay to do it.