Sorry, a short bed pickup does NOT greatly aggravate the weight issue at all.
A short bed truck does not have any less weight-carrying capacity than a long bed truck of the same type. E.g. a GMC 3500 SRW short bed and a GMC 3500 SRW long bed both use the same axles, springs, and tires, have the same gross axle ratings on the door sticker.
If anything the short bed pickup HELPS the weight carrying issue as it is LIGHTER than a long bed pickup of the same type.
The only thing it aggravates is the space available to carry the weight.