It happened to me not too long ago when I was looking to buy a cheap generic 12vdc starter relay at the local auto parts store. I didn't have to walk with him to pick it off the back room shelf......but I did have to locate it on his parts computer for him. He had no clue. Sheesh!!!
Yes.
Needed a couple V belts for my 80s Ford.
Dude didn't know how to measure them nor had he ever sold a V belt.
We had to go look together.
I guess serpentine belts are the norm now but I was surprised nonetheless.