Tailwind is a set of design primitives and tooling that are designed to work together in a manner that is more flexible than something like Bootstrap. You could recreate bootstrap’s look -with- Tailwind. See the many off the shelf UI libraries created this way. Tailwind however isn’t designed to create off the shelf generic Ui libraries. It was created for building bespoke UIs that have their styles tightly coupled to their markup. You know, components…

Bootstrap & co is really more like a set of preset styles and UI logic which you can use to quickly get some UI working.

If these distinctions are too subtle to matter for you, then you aren’t facing the problems that Tailwind or similar tools are meant to solve.