any auto manufacturer, such as Honda, that doesn't recommend using a WDH, is saying "we really don't trust this vehicle to do any real towing".
most of those that WDH's are not recommended for, are unibody SUV's that have no business towing anything but a popup or boat.
WDH's are a tried and true device that allows for safe towing of high profile boxes that weigh down the rear of vehicles and need weight transfer.
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC