We are social creatures, and wanting to impress fellow beings is part of the reason why we do original things.

When you made something public domain pre-LLMs, you generally could expect people to give kudos to you.

With LLMs, if you make something public and an LLM gobbles it up, not only you get zero credit but you also can’t convincingly claim to have come up with it (since anyone can just assume you used an LLM), and neither can anyone else (even if they have come up with it fully independently).

If you don’t seek any recognition for your original work, then that’s fine, but I suspect you might be in a minority.