That is not true.

For many people towing their boat to the launch it will work excellently.

Towing trailer full of junk to the disposal, same thing. Also pulling the wood chipper to the dump. Heavy, but not going far.

Picking up lumber in town, just fine. Excellent for picking up steel for the shop.

It would be more accurate to claim it will do poorly in cross country towing. For the towing I do, it would be just fine.

1/3 the range when towing is still a 100 miles.