I think that we need to have a flat-out ban on all ChatGPT content.
- It is not possible to avoid plagiarism. Others have discussed the citation problem, which is important. But if someone is simply copy-pasting ChatGPT content as the entirety of their answer, a citation isn't sufficient to avoid falling afoul of our plagiarism rules.
- It has an accuracy problem. It generates wrong answers that look good.
Its content is also questionably licensed (if at all) but I'm not a lawyer so I'm going to not try to dive into that. Instead I'm going to discuss the second bullet above because the first is covered by other answers.
After spending some amount of time asking ChatGPT game related questions (for games I've played, a mix of questions found on this site and some I've come up with myself), I've yet to actually convince ChatGPT to give me a correct answer for any game related question beyond something so trivial it should be downvoted as low-effort rather than answered.
The problem with this is, there are a lot of games; it's not feasible for us to have experts in all of them. Many times we help figure out the correct answer not by actually having experience in the game but by finding other people with similar issues or who mention work arounds and bring that information together to come up with a solution. But sometimes we do have people answer who have played the game themselves; often these answers are worth more because they can speak more accurately to the solution(s) or lackthereof.
The problem with ChatGPT is that its answers are stated authoritatively. It doesn't come out and say that it has played the game, but it states its response as facts.
Consider this question:
Q: How can I tell the size of my enclosure in Jurassic Park Evolution?
A: In Jurassic Park Evolution, you can view the size of your enclosure by selecting the enclosure in question and then checking the information panel that appears on the right side of the screen. The size of the enclosure will be listed in square meters. Additionally, you can also view the size of the enclosure by hovering over the enclosure with your cursor and a tooltip will appear showing you the size of the enclosure.
This sounds very reasonable. It's definitely how this game mechanic works in other "zoo park" type games like Planet Zoo (also made by Frontier.) If I had no experience with this game at all, and came upon this Q&A pair, I would have upvoted the answer because it's well written, succinct, provides two solutions; it looks like a genuine, useful answer.
The problem is, of course, that it's completely, 100% wrong. It is a beautifully written, very good, and completely wrong answer.
If we let this stay as an answer (and assume that the poster properly attributed ChatGPT so it's not plagiarism), we have the problem that now we need to moderate the accuracy of answers for a massive library of games each of us likely only has played a fraction of.
People don't like to downvote, so our organic moderation via downvotes (especially for well written answers) isn't something we could rely on. There's a non-negligible number of people who post a question and never come back (or posted a question a very long time ago and haven't been back so a new ChatGPT answer doesn't get any reaction from them.)
I suspect there's a number of people like me who vote up more along the lines of a well written answer that describes the solution(s) well even though we're not necessarily experts in the topic ourselves (or have played the game at all.) We're not voting on the accuracy of the answer (unless it directly contradicts a statement of fact in the OP with no proof, or a "that's wrong/doesn't work" comment has been left).
I don't think it's possible to moderate for accuracy with the tools we have at hand, or the current level of participation we have on this site.
For the curious, the answer to the question I posed to ChatGPT above is "you can't." But there are ways to estimate whether it'll meet the dinosaur's requirements that could be detailed in a real answer by someone who's actually played the game or who searches through the Steam community discussion and pieces together an answer. It's answerable by the sorts of humans who participate in this site, but not by ChatGPT.