One of the ways in which the web is like an ecosystem is that a synthetic text spill in one part of it can leak into others. Here, someone has posted ChatGPT output (unclear to what end) and the Google indexed it.
I learned of this particular #GoogleFail via BlueSky user aviendha69's post:
https://bsky.app/profile/aviendha69.bsky.social/post/3k4yxz2zz7f2v
... and verified that I could find the same results. (For now, anyway. Sometimes things things get patched.)