also not just a matter of understanding concepts, it's a matter of familiarity with tools, sure a developer, and most other humans, could open documentation and read and figure out how to do something in 5 hours that would have taken a person skilled in devops maybe 3 minutes. Linux alone is a rabbit hole, add cloud, kubernettes, docker, basic database management, cron jobs, permission setting, certification renewal, etc.. the amount of commands and their variations gets quite large.
