controversy was that cramps aren't an injury, they are conditioning problems, so players shouldn't get any mercy.
example: steve johnson lost a 1st round match cause of cramps. he cramped, hobbled around on court, laid down in his chair, and was given point and game punishments cause he was stalling (couldn't even stand up) - but that's the way it is. eventually he retired.
here, peng got 10 minutes to recover with no points taken away, got a MTO when she shouldn't have, and still got a second chance to play