Maybe I should clarify what I mean. I think specialization is useful in some context. Let's say you are a IaaS or PaaS provider of some sort. Then probably your employees will only work on devops and nothing else. I can see that people would only need special skills then. But then there is no need to rant about how developers don't know the details. Because there are no developers involved. Also if you are working for a cloud provider for example you can't escape installing hardware and maintain physical infrastructure. I am aware of that too.

But we are talking about devops in the context of gruntwork. Which is targeting developers/dev teams and then making unsubstantiated claims about those devs' understanding. That's why I say what I say.