Inverter usage while underway

so the fact that some RVs have an inverter, and that inverters are sold to the public, means nothing and that we should all drive down the road with propane lines open, whether or not the regulator is capable of shutting output in the event of an open line, and we all know that man-made devices are not subject to failure the fact that I'm interested in putting an inverter in a coach that didn't come with one installed, that it will instantly fail and the vehicle will go up in flames anyway, well my friends, that is preposterous.

Simply put, there are two sides to this fence and the demarc has clearly been drawn.

There is no clear answer to my original question.