Lots of complaints about parts counter guys, but unfortunately most are at the mercy of their bosses and lack of training etc, oh yeah and shitty pay too.
The corporations don't want people that know cars or parts.
I was overlooked for a job at Checker Auto when I was 17/18, they didn't hire me, so I ended up in the corps. Their loss at the time, so I have no problem laughing at the morons they ended up with today.