I'm one of those people who enjoys making fun of Tailwind even though I've never used it.
But I keep hearing the same thing from different people who like it. They don't put it in these terms, but what I hear is:
Tailwind lets you style things without naming a bunch of things.
Not saying this is an insurmountable problem of other CSS methodologies, but just that Tailwind involves less coming up with names.
And naming things, as we know, is one of the two hard things in computer science.