Those people who drive trucks and haul heavy stuff know these things. People who have never driven a truck under load are naive, and are buying these trucks to satisfy their ego.
My ICE truck can haul goods, but I can feel the extra strain put upon my truck, both in excessive use of gasoline as well as more difficult handling and longer braking time. Sure, EV's have incredible torque and pulling power, but there is a price to pay, just as with gasoline and diesel vehicles. EV's excel in an urban environment with short runs where range is not a big deal. On extended trips, not so much.
I’ve never been a truck owner but have a buddy that is. Some years ago he bought a bass boat. The trailer has assisted breaking capabilities. I think the system is rather simple. In the BMW video I mentioned, the camper has active communication with the BMW and actively coordinates breaking and anti-snaking prevention. I thought that was kind of cool even though the max range is about 100 miles or so..