It made sense back then because it was all we had to learn. Today there's tons of code to learn from both in open source and resources.
Lets get rid of this false dichotomy that the only way to learn is by viewing the source of websites, in the year 2024.
I didn't mean to say this is the only way of learning, but I stand firm on that it's still a great way to learn, to look at how cool stuff was done when you come across it on real websites, not just from blog posts describing something. In addition to reading fundamentals, practicing small projects and so on, of course.
I started learning CSS only about 6 years ago. So I had Stack Overflow and MDN web docs for it.
Anything that makes your code less readable is a fail. I understand that people want to treat CSS and HTML as assembly, but that's a leaky metaphor, and only works insofar as you never have to debug an actual webpage.
Every place I've ever seen with tailwind has struggled with front end work, because the end result is so horribly abstracted from the code.
The developing code is not unreadable like that one. I think Tailwind is very readable during development. Even if I had only used in side projects.
You have to have a certain level of discipline to write clean CSS, but it really isn't that hard. It shouldn't take a 300-character inline style to make a button, when you can use CSS as intended, and have a class named "button".