I think you are not understanding what it is that they are trying to accomplish with this concept as described. You are impregnating colour into a material using sublimation. And the material is a polymer.
A polymer sheet (much like a regular cotton transfer paper sheet) is sublimated. The sublimated **sheet*** is then heat transfered onto cotton. No violation of physics involved.
The printed sheet is not releasing dye into the cotton fibers, it is a polymer substrate that has been sublimated, then that is placed onto the 100% cotton tshirt and heat pressed. It is not a "sublimation paper" in the strict sense.
Oh no I certainly understand the process (I've been doing it for 6 years!), I was actually re-iterating the point you and a few others made if you read my post again!
By saying that you are impregnating a colour into a material is again misleading and almost hair splitting because you mean the transfer paper not the cotton material. I agree with your explanation 100%, I'm just trying to make it clear for someone who doesn't really understand the process that well.
The reason I wrote my first post is because the OP stated that he/she had "received a few ads for paper that makes it possible for you to sublimate 100% cotton."