I think you're more or less described what the end-result for Tailwind is. Tailwind doesn't prevent you from writing vanilla CSS in any way, shape or form. It's a big part of why all the hate often feels so weird. People largely just seem to hate seeing it. I've never read one of these articles where people could resist subjectively calling out what amounts to, "Well, it's ugly!".
That way if you dislike tailwind, just run some script and voila, you have your .css file you can edit separately, like a good old days