Suspect? It was claimed to be a desire, which makes it pretty much not a secret.

I don't think anybody has claimed that 3K is an ideal oil-change interval, but rather that your assumption that 3K is too short does not lead to a valid conclusion that oil need not ever be changed.

Claiming that the car isn't worth more oil is a valid argument. However, claiming that 3k oil changes means that we use significantly more oil is bogus. I burn better than 90 gallons of fuel oil in that interval. Two more gallons of oil THAT GET RECYCLED isn't going to mean much.