Good feedback! I was trying to get at the idea that DevOps is broad, its often invisible and its therefore often undervalued/underprioritized. I'll have another go trying to convey that.
The interpretation that I see banded about comes from the 10+ deploys a day talk from flickr, where they said having a team of diverse backgrounds was better than having an individual.
Somehow in that zeitgeist sysadmins got rebranded devops, so in that case it makes sense to have a "devops engineer".