I’m not so sure all of those residents knew of the unstable soil when they bought their homes. It will be interesting to see the disclosure reports for past RE transactions in the area.
It’s going to take years to sort out the blame…
What a terrible thing to have happen, regardless. Having dealt with insurance companies in the past, I know that there is always an exception/condition that causes denial of coverage. If the sinkhole was caused by the human drilling, no way will the insurance companies cover it under the umbrella of earthquake/geological event.