So where are we at with utility libs (tailwind/tachyon) vs inline css in js vs preprocessors (sass/scss) vs vanilla modern css?
Wherever you want to be.
Tailwind works for your team? Go for it. Inline CSS for your solo project? By all means. Still stuck on SASS? It'll keep working just fine. All in on modern CSS? More power to ya!
Wherever you want to be.