While this is a great HYPOTHETICAL discussion, in real life IT DOES NOT HAPPEN.
The reason for using GVWR is that you do NOT know any ACTUAL weights. There are three sure things in life: Death, taxes, and the trailer always weighs way more than you think it does.
If actual weights are known and can be verified, that is one thing, but I've never seen an RV dealer with their own DOT-certified 3-platform vehicle scales on site, and I have never seen an RV dealer that will let you take a trailer for a "test tow" to a CAT scale facility 20, 30, 40, 50 miles away.
Actual as-shipped "dry" weights of trailers are a few hundred to several hundred pounds heavier than what it says on the brochure.
Using GVWR gives you a safe cushion because you can be reasonably sure that the trailer will not exceed that weight.
It is a lot simpler than making wild stabs in the dark as to what things weigh, and you stand a much better chance of ending up with a rig that you will enjoy driving, instead of something you hate driving, or worse are afraid to drive.
All we give here is our opinions. You can choose to believe or not believe whoever you want. It is all food for thought. Try to view the information with a logical, rational mind rather than looking for someone to tell you what you want to hear.
In the grand scheme does it matter? NO. If you can get accurate weights and the lightly-loaded 9500lb GVWR trailer is light enough to tow, then there is nothing wrong with that. The problem is most of us do not have the means to know ahead of time and frankly I would not want to drop tens of thousands of my hard-earned dollars on something only to find out that I was LIED to and I'm STUCK with an overpriced lawn ornament.
