One major difference between now and then is that now automation is starting to look and behave in a way that can be confused with a human. Most, if not all, comments generated by machines before LLMs could be identified as such, while now it's going to get harder and harder to detect properly.

Quick evaluation: did a human write this comment or did I use GPT-4 to write this comment by just providing what meaning I wanted to convey?

The answer is f3bd3abcb05c3a362362a17f690d73aa7df15eb2acf4eb5bf8a5d39d07bae216 (sha256sum)