Why do you assume it's a legitimate thing to do? Nothing changed from a copyright perspective. You can copy a GPL file directly, or take a photo of it, then decode the JPG, OCR the bitmap and put the result in a file, or you can train a LLM to reproduce it. It's all the same, if a judge feels you've copied a substantial part of the file then it's an infringement.
The same way an LLM would generate that code without the license, another LLM could find that code and determine that it infringes. If anything, the emergence of LLM powered agents will empower the free software movement to find infringements.
The only way free software would "end", is if judges would not be able to enforce copyright, because for example the copyright infringement is obfuscated too much. For example if LLM powered agents are going to both generate and run the code without ever saving it to disk. We're not quite there yet.
The same way an LLM would generate that code without the license, another LLM could find that code and determine that it infringes. If anything, the emergence of LLM powered agents will empower the free software movement to find infringements.
The only way free software would "end", is if judges would not be able to enforce copyright, because for example the copyright infringement is obfuscated too much. For example if LLM powered agents are going to both generate and run the code without ever saving it to disk. We're not quite there yet.