This sort of reminds me of all the snakeoil involved with vinyl record terminology. People love love love that super thick vinyl. I admit it feels nice in the hand, but they never talk about that. They ramble on and on about how great it sounds. The groove isn't cut any differently for a flexi (those things they stuck in magazines) or a 200gm record. The cutter rarely knows what is going to be pressed, not that it would matter to them anyway. On top of that, thicker vinyl creates all kinds of new problems for the pressing plant that potentially result in more noise and crackle/pop than if it was pressed at standard weight.
Every industry has its snakeoil to pull in the suckers. I don't get the impression pipe companies are pulling this nonsense, but maybe a history lesson would change that. If anything, they strike me as lazy and trite when it comes to naming.