I do think that people really underestimate how quickly a system starts being "please, no downtime" (or its weaker cousin, "please, don't make your ops people do rollouts at 1AM").
Like obviously it's not the end of the world but the default assumption of "the system is up" makes a loooooot of things downstream of that easier.
Having to do operational bug triage on systems that routinely have blips in availability is unfun.