I agree, you can even take cleaning a Survivor car to far, just depend on the degree of car you start with.
Mine was an original owner car and very much unmolested, I wanted a Survivor car I could start and even drive. So I was going to clean as much as I could disassembling as little as possible, I didn't want wrench marks and wanted the car to remain true.
Wanting to car to be drivable I knew things like exhaust, plug wires, battery, heater hoses had to be changed, I had no choice.
I believe there should be a percentage or points (Like Steve's Vintage class) for these cars so mine and others has a place, and a car like Charlie's also can show at the percentage it is.
Still think should have original panels and paint, No detailing as far as paint all driveline and numbers, interior and things like hoses, tires, belts, are all bonus.
When you see a true Survivor car you can tell from a 100 feet away, or maybe that's just me, but give me one any day.