Points of opinion
It is incredibly hard (if not impossible) to remove all single points of failure from a complex system. (And sometimes that SPoF is a human)
Last point first: If your SPoF is a human, you have a substantially broken process. I've seen positions created (by the demand of the board) to fix this.
As for the first, note that it is often much easier to fix this in software than hardware. Ten years ago, at least, Google did not use RAID in their data centers, as the RAID controllers themselves failed too often. Data resilience was handled completely by software.
Likewise, there was not a lot of redundancy within an individual data center. Their policy was, "Outages occur (planned and unplanned). Design your service so that it is not a problem when they both happen at the same time." The week that happened to my service had a lot of noisy pages, but the users never saw a thing.
Efforts to improve data center uptime by adding various redundancies were met with great skepticism, leading to my favorite business quote, "It is in Google's best interest that you pretend to believe these numbers." (Early results were underwhelming.)
Of course the entire reason that DNS can respond with multiple IP addresses for the same service is specifically to remove a class of SPoFs.
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You had to conduct a risk assessment to determine whether it was safe to have a meeting in a room where the lights weren't working, but had a big window that let light in?
Well...yes. You conduct a risk assessment on every room as it relates to a power outage. That assessment comes back, "The room in question is on the first floor, and therefore accessible without resorting to elevators or stairs. It is also on an outside wall. Therefore, during hours of full sun, use of this room for meetings presents minimal risk." The DR plan can then use this room for business-hour meetings during a power outage without adding safety measures such as flashlights ("torches") or glow tape.
It is precisely this sort of comically-dry detail that goes into proper DR planning.
But why does the PR include such detail? That's standup fodder. I don't fault them for doing proper DR planning. I fault them for putting that kind of detail in the PR. "We are implementing our DR plan" But someone on the board was just so self-important that they had to be shown meeting in this dark room. And then explaining why. <shakes head sadly>