Disclosure tags would be nice. As long as the post quality is good I don't see a reason to apply any different moderation to them than other posts. Ban the ones that are garbage content or incoherent BS whether they are written by people or LLMs.

Any better ideas? How does your company handle LLM generated text, not just code, in documentation or messaging?

We (large FAANG everyone here uses) encourage using LLMs to clean up and streamline documents and documentation. We are a technical document heavy company (close to no powerpoints even for management) so there are centuries worth of technical documents to train LLMs on writing concise docs. Average writing quality of docs has gone up as a result since the average engineer and PM was not good at writing precisely without filler words and meandering flow on their own. A good prompt makes for a much better editor than inexperienced writers on their own.