A non-exhaustive list of projects you will need to avoid if you want no LLM-generated code in your life: Windows, oSX/iOS, Android, Chrome, Firefox, Debian, RedHat, the Linux kernel, and any derivations of all the aforementioned products. In other words, you better learn to live off the land and grow some potatos or something, 'cause IDK how else you are going to survive let alone participate in society. Best of luck with it though!