Mud OCD is a thing for sure.
You're right though, they will run and run and run with severe neglect. Eventually someone's gotta pay for that neglect either through a failure, or the death of a thousand cuts later
One of the Land Cruiser's best qualities is also an Achilles heel. They are so over-built that they will go an extremely long way without proper maintenance and they don't complain until they are hurt really bad and need MAJOR care to get back in shape.