What I was trying to say was more along the lines of a 3rd-party service abstracting the work is not a good idea in the long-term.
It is unthinkable right now, but what will happen with Amazon/AWS goes bankrupt and no longer exists? All these AWS Certified Engineers who are not actually devops will suddenly be lost.
On the flipside, if you learn everything from the ground up and then jump on AWS or whatever service is available, you will be in a much better position when the day comes to move away and to something else.
Abstractions in something like programming languages is fine because the language won't simply disappear one day - you'll evolve as a programmer and will be stronger for it.