* the burden of CSS implementation of standards, is mostly on browsers
* the new standards are supposed to be reducing complexity. Nobody wants to go back to hacking rounded corners together. CSS Grid finally gave us a sane way to specify 2D layouts, which were previously all designed by hacking 1D-priority things.
One of my two main languages nowadays is Python, mostly deployed on single cloud instances, and it's still a case of writing a text file, sticking a #!/usr/bin/python at the top, and running it.
Obviously if you're doing something that pulls in a ton of dependencies and uses live ever-changing APIs, you're in a much more complicated situation, but Python has never stopped being really darn simple for the simple use cases.
This is Chris Coyier, who launched css-tricks back in 2007 and codepen in 2012. He's worked in this field for over 15 years and is one of the most recognisable figures in the webdev community.