Thanks for bringing this up. Funny enough, despite their apparent cooperation at first, the original user who’s ChatGPT answer prompted this thread actually ended up being exactly that, as they then switched to a pattern of plagiarizing Stack Overflow questions and hiding links to their spam site within them, which quickly got them blocked as a spammer once the pattern was spotted (which I believe either you or Chris here originally brought to our attention).
I went ahead and blocked the offending spammer and their username/IP, along with removing their spam posts.
Hmm, that’s definitely a spam pattern I’ve commonly seen on a number of other platforms, e.g. YouTube, Reddit, Q&A sites, etc. However, digging deeper, there doesn’t appear to be clear evidence that is the case here, as the two user accounts were created at different dates, have different IPs from very different countries, different emails, and nothing else that would appear to connect them.
The only potential point of interest is both had their first posts flagged for “typing too fast” (i.e. copy/pasting text from another source or using a bot), though that filter is rather crude and can have a number of false positives, particularly on very short text like in this case (since its a simple flat time check) or if it was copy/pasted for other reasons.
It seems a rather plausible alternative that given the number of new questions asked here and the fact that there is no need for a particular question to be asked (that would lead into the spam, as in many other cases), spammers could simply pick any suitable existing one and reply to that, without needing to create another fake account and have it post its own questions.
There are a number of filters and antispam checks that only apply to a user’s first post, a bunch of limitations that posting a couple times, getting a few likes and otherwise interacting a bit with the site will remove (including with posting links) via going from TL0 (New User) to TL1 (Basic user), and users with a higher TL need more flags by higher-ranked users to be auto-hidden. Thus, this is a not-uncommon phenomenon.