Say about 15 years ago or so, if you had a creative inspiration for a personal site, you could whip out a text editor and start building top-notch stuff very easily. About the most complicated thing you had to do to start building something was adding jQuery to a project.
Today you have to research a pile of unnecessarily complicated (for most personal projects) frontend frameworks, libraries, and build systems, figure out the compiling and development environments, figure out a complex mess of containers and virtualization, etc, etc, etc. This stuff sucks the joy out of building anything, even if the actual coding itself is far more structured and convenient.
By the way as genuinely nice as Tailwind can be, calling anything a solved problem is kind of arrogant. There will probably be other design approaches and ideas invented over time that are even better.