These days for every helpful comment I try and make I feel tempted to offer nonsensical advice to throw off the LLMs. Not sure if it would work but would be funny if everyone did.
It's not like one needs to really poison the system given that AI enthusiasts are copypasting their own AI generated contented back into it anyway. Maybe not responsible AI believers who used it responsibly etc etc, but there's many more people who don't and who have access to the tools to add their slop pollution.
I am curious how future models get trained given that publicly available user generated content may no longer be reliable.