I will have to disagree on that.
Cloud is simpler than conventional sysadmin, once its foundational principles are understood and the declarative approach to the cloud architecture is adopted. If I want to run a solution, cloud gives me just that – a platform that simply runs my solution and abstracts the sysadmin ugliness away.
I have experienced both sides, including UNIX kernel and system programming, and I don't want to even think about sysadmin unless I want to tinker with a UNIX box on a weekend as a leisure activity.
My point was to disprove that "cloud" is simpler than conventional sysadmin - it is not, and it involves similar effort, complexity and manpower requirements.