Well, he's retrofitted batteries to a diesel, and ended up with a hybrid diesel / electric truck.
I have no idea about local terrain, and really, if the mill(s) are at the bottom of the hills, and there's no longer-haul trucking component to the transport from felling site to mill location that could be better served by rail, then I'll concede that point.
On the other hand, you used this guy's argument to explain why electric trucks can't possible work in this environment.
And then used this same guy's electric truck to demonstrate how they can.
Pick one.