Not my impression at all. The author presents the design process itself as coming up with a list of features. What is much more sought after is to latch onto some of the following principles:
1. Turtles all the way down
2. Everything is an X
3. Uniformly treating [traditionaly different] things as "the same", like collapsing the value and type levels or letting you run code both at runtime and compile time
You then try to implement the features that you need with one of the above starting points. For example, Zig apparently implements generics using number 3 (compile time code).
In fact, the pinnacle of PL design to some people is to have very little in the way of built-in features and then let the users themselves implement whatever it is they need. Which I guess the Lisp family is the best at.
The quoted paragraph seems like a caricature of the design process of a langauge. She says that this line of thinking "is simplistic". Indeed it is—non-believably so.