rounded-corners saves you time over writing border-radius: 6px? And what about rounded-md, what does that do (in tailwind)? What about text-2xl versus font-medium? And what happens when you want to have a couple of styles in common between different elements so you actually need to use classes as they were intended, so you have to know CSS and this weird version where you write all your CSS in the class attribute.
Thanks for taking the time to write down your perspective; I still just don't get it though.