I haven't "managed a server" outside of my house for a few years now, and I quite like it. I theoretically have had root to ECS clusters, but I've never logged into them. Why would I? Amazon is going to be better at it than I am. Not only do I have more important things to be doing, but I'll do a worse job of it than they will. And to be clear: I consider myself pretty kinda really good at this stuff. But not good enough to make it a competitive advantage unless it's what I want to sell, and I sure as heck don't.
And the article's point, that whatever comes next will probably be better and might even be The Real Thing--I think that is wise.