[somethoughts]

I think there's a tremendous value in having insurance/redundancy for supporting existing critical SW projects/infrastructure.

So while day to day there might not be immediate obvious work, much like a fire fighter or life guard; if the servers go down or coworkers leave there needs to be some ballast that can steer the ship.

That said, if you don't actually know much of the companies code base other than stuff you've directly written, you could very much be providing only perceived insurance versus actual insurance.