Yea...I was there when Matt hit the tree. That situation was a combo of a lot of things.
I did not know that the 60s didn't have a LSPV. How about that.
But yes, engine braking on manuals does help. Not so sure about the weight distribution part of it though.
The FJ60 has a proportioning valve located under the master cylinder, but no LSPV. The FJ62 does not have the prop valve like the 60, instead it has the LSPV at the rear axle.
I didn’t understand the weight distribution issue either, but my buddy went into some differential equation stuff that was way over my head. I think it comes down to the amount of friction and force that’s distributed to the engine/transmission vs brakes.
I had an issue in my transfercase and rear pinion and was putting it in neural to lessen the back load upon deceleration. There was a bunch of chattering in the bearings if I didn’t do that. His explanation was way more detailed, but essentially I was making the brakes do more work than they needed to and putting myself in a dangerous situation should a line blow out with the added force applied to the brake system.
I am no automotive engineering expert but in my long-term experience in driving Land Cruisers this sounds like uninformed gibberish from this "expert."