You are precisely right, and people with a devops mindset are most of the people that are building the cloud platforms that will render the role largely obsolete.

A typical developer just wants to code against an api, and shouldn't have to care about the infrastructure. As cloud providers (both public and private) move up the stack from providing just virtualized machines (ec2) to higher level services (dynamodb) to more complete frameworks (lambda), the developer cares less and less about what runs underneath that.

Devops does indeed sow the seeds of its own destruction. :)