The other thread poster was not so smart if he said it was not a WD hitch. That's exactly what Anderson hitch is, the clue is the chains and springs that do exactly what a WD hitch does. Those dumb post are best ignored.
I have only read bad things about the Anderson, glad you have it working for you.
The bad things are that the hitch does not actually turn after using it many miles. Too much weight on the hitch puts too much stress. Maybe it needs to be greased up before each use. I do not know. Yes, less weight would certainly cause less wear so that might be why yours still works as new while others, with heavier tongue weight, toss them in the trash.
How much articulation is possible with this hitch? When the truck goes up an incline and the trailer is still on flat ground this puts maximum tension on a WE hitch, stretching the spring. Do you think Anderson can "spring" as far as the bar style ones?
I have seen used ones cheap, but my trailer is light, so was thinking maybe it would work for me.