My towing-capable gas vehicle sees at worst a 30% decrease in range from towing my camping trailer, and my towing-capable diesel vehicle sees closer to a 10% decrease in range.

A while back, I read a comment on here from someone who lived in a trailer full-time as a digital nomad. They were also dedicated to driving an EV. They towed their small trailer with their Model Y. I grant you, the Model Y is not optimized for towing the way that the Cybertruck (ostensibly) is, but they described the process of travelling between Grand Junction, Colorado, and Moab, Utah, a distance just over 110 miles. With the trailer, they had to drive to Cisco, about halfway in between, drop the trailer, drive back to Grand Junction, recharge fully, drive back again, pick up the trailer, and drive the remaining 60 or so miles to Moab, where they could recharge again. Because without the trailer, they could drive the entire 1-way distance 3 times over without recharging. With the trailer, they could not make the whole trip once.