I suspect that expedite climb got his/her aeronautical lessons off the back of a cereal packet.
"Flaps are used on appoach to allow a rate of descent to be maintained at a constant power" or words to that effect.
So reduction in stall speed, increased camber, increased wing area, better low speed handling characteristics are all just unwanted side effects??
Why dont people keep quiet about stuff they clearly know very lilttle about.
As the saying goes, a little knowledge is dangerous......................