Low demand for it also. Most RV's have a 30A or 50A connection point already.
The risk would be similar to using one of these:
There's just nothing to prevent the full 30 amps from passing though that or through either leg of the Conntek adapter then through an extension cord and to a malfunctioning appliance.
We are used to seeing multi outlet taps or power strips etc. but they are always going to limited by the 15 amp breaker in the circuit. They could have 10 outlets but you can't pull more than 15 amps through it.
What is different here is 15 amp rated parts, extension cords, appliances etc., being used on a circuit that has a 30 amp circuit breaker.
