Sometimes they are sometimes not. Difficult to tell apart.

Something like #4 (diarrhea) in a review can ruin a new place.

In many cases the customers are the polite ones.

I used to work for a j#rk who would order a burger and when he got it he would hold it up and complain it did not look like the picture on the menu and ask for his money back,
EVERY SINGLE F@#KING TIME