SFFP,
You aren't the one displaying the resentment. You are simply being your (old) self with the 'stop whingeing' line, for which I have a degree of sympathy, but not in this case. The guy brought a valid concern to light.
You will accept that other posters have made this thread fairly vitriolic.
A point of yours with which I actually directly disagree is the notion that 'the muppet' should have done the maths before hand. He probably did then someone moved the goal posts.
I actually really enjoy locking horns with your good self. Not going to quit when you retire are you?