Insulin has potential to create marbilized intramuscular fatty tissue. Adipocytes are argued to be nearly impossible to destroy, so I think these guys are creating massive amounts of intramuscular adipocytes and making it impossible to create the old school traditional shredded look. Add on to that the thickened dermal layers via GH...It's not just subcutaneous fat were dealing with here or the fact that guys "can't diet nowadays."
Insulin is the worst thing to happen to bodybuilding.
This is professional opinion on men in thongs.