Depends on what systems the SRE is managing or even on the downstream clients relying on their work. Around Y2K a bug took the out the emergency call application for the fire department in Berlin at midnight New Year’s Eve. People died because dispatch was not available. It’s an IT system where people die if you mess up. AFAIR in one of the earlier prolonged AWS outages, some sort of medical provider failed and people were at risk. It’s not all just display ads on websites.