That's right, people will always make mistakes. But it seems to me that this technique, which was shown by OP, will already be taken note of by AI lovers, and the citation of the post will be checked every time. Just like all the subsequent experiments that you asked to know about as a demonstration, they will be taken into account by those who abuse AI. Didn't the same thing happen when we showed connections by wallets and other coincidences? The cheaters have become more attentive, and maybe even more arrogant, because they know the ways in which they could be tracked. In the end, he who has eyes will see, but he who has reason will cease.
Yes, the scammers who use AI in wrong way always learn from everything but I'm pretty sure if they're so lazy that for making posts they use AI then such people might not give proper time to read what OP shared. Such people misuse AI and it's because of those abusers that now even if someone use AI for good will get some type of penalty.
Yes, the ones who used multiple accounts back in the days got alert after members started showing connections, but even this day those scammers get caught and so is going to be the case with the ones who misuse AI. For sometime they'll be able to use their techniques but in the end they'll make some mistakes and those mistakes are enough to destroy their reputation.