My idea of a spotter when benching is just to have someone standing there so that if the bar is stuck on my chest then they can remove it....but for
some, the spotter unracks the bar, does some heavy assisted bent-over rows and then puts the bar back.

The guy then claims to have 'benched' that weight, probably 30% more than he would have been able to do by himself.
It only counts when I can unrack the weight and put it back without help.