I don’t doubt they have the torque or power to tow. I recently read a test about pickup trucks, I think it was the Ford all electric F?, I don’t recall the model. It had tremendous power, but the range while towing dropped to about 1/3 of the non towing range. So towing even a couple hundred miles would require multiple charges.
Years ago when I would tow my boat and camper I found the wheelbase of the tow vehicle, the distance of the tow vehicle rear axel to ball and weight of the tow vehicle had a significant effect on the stability of the vehicle and trailer. So while a Tesla might have plenty of power, I personally would not want to tow much weight with one.
My favorite tow vehicle was my 3/4 ton Chevy Suburban. It had a 454 engine and a 4.10 axel ratio. It had great stability, braking and power. Almost didn’t know you were towing, but it did suck the gas.