Tailwind has some nice ideas, but boy oh boy is that ecosystem a mess of tool chaining. The barriers to entry are low (e.g. "just npm install [thing]" then init), but maintaining, updating, and dealing with conflicts between all these tools is an absolute nightmare and getting worse rapidly (and, no, the "Play CDN" version of Tailwinds doesn't mitigate anything because it isn't supported in production).

Bootstrap for all its critics, is just "reference the library, reference your theme, and you're done." You want to upgrade? You can just have individual pages referencing different versions at the same time, without npm reconfiguration.