I think it was an attempt at a joke... basically that the user introduces a faulty juxtaposition that doesn't make sense. One is a CSS framework specifically tailored to SPA's (or heaven forbid MPA's) by providing many generic classes that can be re-used, where as the other 3 are CSS pre-processors designed to simplify writing CSS, though technically speaking tailwind also does pre-processing, since it provides a boilerplate css reset, use of variables, functions, concatenation and compressing them together and oh god I'm the joke... I'm the joke here. I've served the punchline, which is a copypasta in of itself.