I agree. Every new hire class at every airline has people with varying abilities and effort. Some don't pass and that may mean the system is working.
I think this situation is so extreme to so many of us here because I can think of maybe two people in the hundreds of us leading up to 2014 who have ever busted an oral... and that wasn't because we were all sharp. It had much more to do with pass them fast because we have a slot burning up time with their name on it.