Not the case, though in a handwave-y way, same idea - instead of iteratively scaling, you're iteratively denoising. See here, links out to the Cornell NLP PhD describe in even more detail: https://www.jpohhhh.com/articles/inflection-point-ml-art
I was kind of explaining how I picture the process in my head, fully aware that it isn't really possible to do an ELI5 on this stuff, and not really having an understanding of the technical details myself, either.