What if the person did plenty of work outside the classroom, but it never happened to involve object-oriented PHP? I just don't understand the bizarre notion th

What if the person did plenty of work outside the classroom, but it never happened to involve object-oriented PHP? I just don't understand the bizarre notion that if one hasn't written object-oriented PHP before, then apparently, well, I'm not even sure what the conclusion is supposed to be, but it seems to be along the lines of "you are a crappy programmer."