But that also mean truck can't electrify. Tesla Model 3 weight around 3500lbs, a Ford F150 Lightning weight 6500lbs. That's mean a "small" pickup truck like Nissan Navara/Frontier, which weight around 3500lbs, when turned into electric vehicle it will be around 4900lbs. A toyota Hilux 1998 also weight around 3600lbs.
Off-road vehicles don't need to be registered or conform to any safety standards so if you are designing something for off-road use, none of this stuff matters, you just can't ALSO drive it on-road.