The environment around caste articles has been found to be toxic and disruptive numerous times at various venues.
We have Arbcom-imposed WP:ARBIPA that covers all India-Pakistan-Afghanistan topics and thereby the caste-related topics.
We have WP:GS/Caste imposed by the community to cover caste-related topics across South Asia (which includes Nepal, Bangladesh, and Sri Lanka, as well as India and Pakistan) but the overlap with India makes the coverage similar to ARBIPA.
While the sanctions are helpful in dealing with stuff post facto, it does not prevent disruption and results in time and effort of editors and admins being wasted as well as bytes on ANI and other related forums
Caste-based off-wiki discussion groups are dime a dozen and we often see coordinated edits. More than that, though, is the off-wiki attacks that editors and admins in this space have had to suffer. A few such incidents have been brought up to ANI or Arbcom on an ad-hoc informational basis, but very rarely are they brought up for remedial purposes as the people targeted by them don't want to take the extra effort.
With our low level of policing of such articles in the past, numerous mirrors have sprung up and are now regularly being used as sources for contentious material within the same articles. An extreme problem of this can be seen from this CCI, pending for five years.
We have to create an environment where our regular editors are not driven out by such activity, and also keep our articles at a reasonable level of cleanliness.
Uninvolved administrators are permitted to temporarily limit editing of an article about an Indian or Pakistani social group (and/or its talkpage) to accounts older than 30 days and with at least 500 edits.