General RVing covers more territory than Motorhomes.
More people generally younger own Towables and Truck Campers and Class C and are more inclined to work on them.
Generally Class A Owners are older and don't or can't jack one up and take off a tire with a tire wrench.
Most RVers that have Class As and Cs have owned or own Towables and or Truck Campers and have gleaned some general knowledge of them over the years.
The DC poster.....well we can't beat up on govt so we beat up on whoever slapped one, of these things, together or raised campground rates, or drunks, dogs, rats, squirrels, smokey fires, and whatever pops up.