DevOps is the practice of using modern software methods to automate the tasks of operations work. That includes using version control, templating languages and various forms of role-based configuration automation.

Anyone who thinks they can hire a devop or declare that they do devops is as deluded as 97% of the folks who claim that they are doing Agile. (If you are firmly on the other side of each of the four principles of the Agile Manifesto, you may or may not be doing great software development, but it's not Agile.)

The problem with the typical DevOps team is that there's no operations expertise.

My experience is that most companies don't do Agile, and DevOps is basically sys admin that also happens to own Jenkins or similar.