Been on vacation for 10 days now. 4 total campgrounds. At first three, Fort DeSoto State Park in Clearwater, Fort Wilderness at Disney, then one in GA while hooked to shore power had no problems run...
The correct way to connect and disconnect from a power pole is to flip the breaker off before plugging in or unplugging.
I suspect 98% of campers don't do this and the result is pitting the plug causing resistance and quickly wearing out the CG power plug and causing excessive heat on the campers plug.