It's satire, bud. Nobody is putting a 5,000lbcamper in the back of a 3/4t. Let's rephrase that, nobody with half a mind.
The power wagon is the only 2500 model that recommends no slide in camper. All the others are ok if you stay within limits. They are a pregressive rate coil and sag less than the new F250 with their light leafs.
For the record, I like my 2500 ram.