Usually, being easy is confused with being simple. Easy to use systems usually tend to be very complex but they'd only hide it from the average user. Once you go one step ahead, do something outside of quick start, you find yourself helpless. In that sense, the article is on point. Not only the management of the ship is simple, machinery behind the scenes is simple as well.

This applies to programming languages, too. Python is easy but when you do advanced stuff, often without realizing, you start to grok many complex details to make it work or make it work in a performant way. On the other hand, Go (and Rust supposedly, but I don't have experience) is simple. It doesn't let you do many things and that results in fewer ways of doing a specific task but when you do it, you feel safer because in the end, it does look and feel simple although you spent 1+ hour than you'd normally spend compared to coding in Python (this assumes you're doing some advanced stuff, not quick start).