Especially if you get a little burned out and can't bring yourself to contribute to a side project, but still want to do programming-ish things that get your brain moving
After you have those skills, they don’t go away.
Math: the most important stuff is the biggest picture. If you learned it properly (not just memorizing), that’s the last to fade.
With programming, the details change but the fundamental skill doesn’t. Or hadn’t as of a few years ago.
Casey also pointed out three kinds of programmers: those who just want to get something done and will use an LLM because it's faster, those who actually like programming, and those who actually like LLMs. Last group always gets left out of these discussions.
(Just as importantly to note - Bob-style OOP was just fine on microprocessors of the 80s with no caches. The state of the industry has changed.)