I've avoided using LLMs. You might not have the option of doing this in paid employment, but you certainly can in your spare time, and if you don't you'll gradually lose the ability to think in a programming language. This applies similarly to any other cognitive skill too: writing music or playing a musical instrument, speaking and reading a foreign language, doing cryptic crosswords, playing chess or go, etc. You wouldn't stop playing chess just because computers are now much better at it. The point is learn, understand, and do those things yourself.

Here's my advice, based on what I have done: implement a programming language yourself, from scratch, without using an LLM, and then program in that. Don't release your implementation, or any code you've written in it.

Most (almost all) of my programming at home has been done in a Lisp dialect I designed and wrote myself, which is superficially similar to Common Lisp, but with subtle differences, including some deficiencies that I have to work around. And in my Lisp dialect, I implemented a visual dataflow language. Code samples are on my web site, but they're PNG images, so are safe from LLMs (I think). The language was designed to run on MIMD hardware, which doesn't exist in the real world. I've also implemented a Prolog which doesn't use Edinburgh syntax, which I use for type checking, and for parsing a controlled English implementation. So the temptation, and also the option, of using an LLM was never there.

In the course of doing all this, I've learned a lot along the way, which I wouldn't have if I'd used an LLM.