Wow, good thread! Never heard about the "lurker".
Fact of he matter remains, in general, the rear diff is the last thing that's going to come apart from towing too heavy with a "stock" truck. May bust a spring, snap an axle, bend a hitch but the engine is never going To send more power through the diff than it makes and it's designed to work with that diff. Period. Yes lurker must be a pos loser.
That said, I had a brand new truck, 01 Ram 1500 with optional 4.10 gears. Only year they offered 4.1s for a long time. Same 9.25 corporate Dana 44 knockoff axle used successfully in dodges dating back to the 60s?
It roached 2 ring gears in less than 2000mi. Towing. Left me sitting on the side of the road hundreds of miles from home both times. Diamler at the time told me I overloaded the truck. Not even close to max tow, rawr or gvw. Second dealer felt so bad I got a free 100k bumper to bumper warranty from them!
3rd r and p set was installed and I pulled out with my trailer and never had another problem in 150kmi.
Point is, you can get a defective part. If I didn't understand that and real world abilities of components I would be spouting off on here about how you can't tow with anything less than a dually, when in reality, DC had a bad batch of ring gears built for their "new" 4.1 axle option that year.