I disagree.
Beside too many owners who forget about turning the propane off at fueling, I have seen too many burned RV on junk yards. Very often stupid flat tire will break the fender, pull propane piping, add sparks from rim bouncing on pavement and all you have left is flat floor with charcoal on top of it.
For me it is easy, when I am driving the propane tank is firmly off. Even in my all-metal conversion.
I will not even mention that propane burners have 30-40% efficiency, when DC power is coming next to free.
What is easier to refuel? Propane or motor fuel?