It was just an example, all electric trucks have unique problems due to the fact they end up weighing more. The last thing you need while driving off road is weight.
Discussion
Basically every built off-road vehicle is heavy as fuck so I don't know where you got that idea. Hummers (real ones), unimogs, rock crawlers, trophy trucks. Plus bigger trucks have more payload and towing capacity.
Survivalism isn't an off-road park. It is main roads rapidly disintegrating into fire road quality.
A 1 ton Edison conversion pickup is a hell of a utility vehicle.
Hybrids weight more in comparison to same class. If you see what the Edison kit includes, you will understand what I mean - you basically get an ICE truck, which is already heavy, and add another 800 lbs (?) in batteries to it. There's no way around that. Still a better option than an EV tho, as you can at least travel further than a full charge would allow.
There are already tests out comparing regular to hybrid trucks in different situations. In perfect conditions it looks a better approach, but the added weight is a drag when you start towing or off road. The edison kit would most likely perform similarly.