Electrician says Motor Homes want 220v

The saddest part, as an electrician, is that a 30 Amp RV receptacle has "30AMPS 125 VOLTS" molded right into the front of the receptacle. All you have to do is have the ability to read, yet every year "electricians" end up creating huge amounts of damage as they add 30 amp outlets for homeowners, and fry everything from converters to every single appliance and AC in the RV. I just met a guy who had over $6K in damage to his Motorhome, thanks to another "electrician" who should of stuck to flipping burgers, and not pretended to be something he clearly wasn't. This guy was hired by a county park to "fix" a power pedestal at a campsite. If you're not smart enough to read the darn instructions, you sure as heck ain't smart enough to decide that you already know how it works. Especially since the average moron that pulls this stunt grabs the outlet and says to himself, "of course I know how to do this, it's the same thing as the old three wire dryer outlet, and it's 220 volts". At that point the fuse is lit.