A suggestion
Tech, is is possible that each time a McC thread is started, there is a link to this discussion and an explanation from mumsnet about the controversy on the site surrounding posting on McC threads. Possibly a statement that the views expressed may not be indicative of etc etc.
Could the link be next to the 'new messages box' or wherever else it would be eyecatching. Also or instead of, a link to the list of people who do not like the speculative nature of the threads.
So whoever opens a McM thread can instantly see that lots of mumsnetters feel this is a topic best left alone? This might stop journalists from quoting mumsnet opinions out of context (or might not but hey, worth a go).
After the judgeflounce episode, you amended the text next to threads started in the legal section. Can you do something similar (with or without a link) here?