To some extent, reading between the lines of many of these comments, I think “pure CSS” designers are feeling threatened by the quality level of Tailwind sites designed by the rest of us.
Documents are designed holistically, you don’t care that much about how a thing (say, an image that is an aside) would look on the next page because on the next page there would be something completely different.
I think much of the debate and contention comes from the fact that many developers only worked on either web apps, or documents (e.g.: static blog, cms) and each try to convince the other group that their approach is the best.