They will not rollback because they wouldn’t have the longest chain to force Core to fork off. Rolling back to genesis is insane, and would certainly fail.

At most we could be concerned about a few weeks of rollback and AFAICS the Satoshi miners have 0 incentive to do this.

If they did extensive rollbacks the only way to be safe would be to obtain your BTC from miners, but that would make BTC not fungible. I see no incentive for miners to set a precedent of breaking BTC’s fungibility when there’s no incentive for them to do so, and significant disincentives.