"Can you give an example where "Legal Consequences" have happened for a RV being overweight?"
Criminal negligence charges in various forms can be filed when your actions {overweight, bad brakes, bald tires, not using wipers, headlights etc., etc.}, cross that legal threshold.
Then there is the civil legal arena. I would consider getting sued for your negligent actions a legal consequence. Wish I had a buck for every TV commercial from law firms seeking accident victims. These sharks go after any and everyone looking for any legal justification to blame one party or another. With that blame comes substantial financial losses. Even if you are only partly to blame, as in your rig was well over its weight limits, you will be assessed a percentage of responsibility for the accident.
"So you are equating being over GVWR to being unsafe, and being within all the "Numbers" being Safe?"
Being over your GVWR definitely makes you less safe {duh}, and being within your numbers eliminates one of many potential safety hazards. How and what you drive are just two more factors but being grossly overweight never contributes to the safe operation of an RV.
:S