There was a bit more to that crash than just one overweight passenger
https://en.wikipedia.org/wiki/Air_Midwest_Flight_5481
Pilots did nothing wrong,the elevator travel was restricted due to a maintenance error and the average weight of the pax was 9kg more than the estimated (standard average) weight.The baggage handler thought some of the bags were pretty heavy too ( a comment I saw in the Air Disaster episode).
It was this crash that caused a revision of the standard pax weight used in calculations upwards (at least in the US).The average passenger was heavier than in days gone by.