I would never discuss or threaten a CLA on a company's forum. That puts the company in a conflict of interest: They are sponsoring the forum that's discussing a lawsuit where they are the defendant.
If you are in the position of being threatened with legal action step one would be to take a long look at your behavior and decide if you are in the wrong legally or morally and decide if you ought to head off such discussion with corrective measures.
Shutting down such discussion isn't going to shut down the discussion on the rest of the internet and is unlikely to help. Its a pretty easy conflict of interest to resolve because your ultimate interest is not looking like an asshole to your potential customers.
