This "key piece of foundational web tech" was released 5 years ago and gained prominence maybe 2-3 years ago. Let's not exaggerate its impact. We were perfectly fine before Tailwind and will be fine after it.
We were not fine before Tailwind, we aren't fine now, and we won't be fine after it until the day we finally recognize that CSS is a terrible foundational standard that deserves to be replaced.
We were not fine before Tailwind, we aren't fine now, and we won't be fine after it until the day we finally recognize that CSS is a terrible foundational standard that deserves to be replaced.