Yes, their setup likely would have been configured, monitored, and maintained properly if they had an IT guy. But they made the (easy to make) mistake of thinki

Yes, their setup likely would have been configured, monitored, and maintained properly if they had an IT guy. But they made the (easy to make) mistake of thinking that having enough tech knowledge means you don't need a proper IT/systems department. I'm certain at least that Linus knows that RAID isn't backup. And I'm Linus is going to try had to get the data back, but it seems to me that this isn't some devastating failure for him.