I think the same rationale applies to this forum and if they're doing it, we should also pursue a set of criteria to establish what constitutes an "AI-generated post."
The forum soon will be overrun with low quality AI generated posts, just because there is a financial gain in it, it is easy to do and the tools are available to everyone.
The first step is to include in the forum policy that AI generated content is not allowed. Most people spamming the forum won't care about the quality of the output, won't spend crafting prompts, so it will be easy to spot and ban the offenders.
More complicated cases will have to be left to the mods discretion. Because the technology is changing rapidly, today's criteria may not be applicable in a couple of months.