This is funny because Google SRE, who are pretty good at devops, are also notorious alcoholics, or at least that's the internal meme. Judging by the prominent liquor displays I'd guess there's some truth to it.
If you’re on call 24 hours a day that means you either have to be stone cold sober or a functioning alcoholic. On call arrangements are a really good reason for unionization. Possibly one of the better ones.
Nobody in Google SRE is on call for 24 hours. They have teams spread across time zones that rotate through the day. They also get paid more when they’re on call.
