The article writer claims that the market for this will disappear as more electric trucks enter the market and I couldn't disagree more, it will make them MORE desirable.

The biggest issue with electric trucks is range, and it's way more of a problem than it is with cars. Charging a truck in 20 minutes is a very different beast from doing it with a car since the amount of power needed is much higher, potentially in the tens of megawatts. Trucks are also traveling very long distances every day instead of just on the occasional road trip. If having a trailer assist is the difference between getting to your destination in one go vs stopping that's way more important for a truck than a car.

If a truck can effectively get a 30% charge just from picking up a trailer then that's massive.