There is a significant degree of variation possible in shunning; forgive me if it has been covered before.
1. The congregation at large may have little or nothing to do with one socially if he is df'd, but still greet him at the hall or on the street.
2. He may be avoided socially by the overall congregation, not greeted at the hall, but his family keeps their normal relationship.
3. A more severe form would be for the congregation to avoid speaking to him at all but allow the family to have normal relationships.
4. More severe, no speaking to him by the congregation, and little or no contact from the family at all, for sure nothing social, only 'necessary' family business, and that business constantly being reviewed and shrunk by the leaderhsip.
It seems to me that #4 is the 'extreme' shunning that is being talked about here, and it is what we have right now in the witnesses; there is no doubt in my mind that they have ramped up the severity of it in the last 10 years.
Why? IMO, they are afraid of rank and file realizing that some df'd people are perfectly happy and normal, not raging sexual animals or demonic apostates, and I think the CO's are reporting to them that many families go their own way on the subject, are ignoring what the WT says and are treating the family member well.
This is annoying leadership, and they seem to be reaching for the most inflammatory rhetoric they can muster to try to stop it.