Like many of pg's essays there's an unqualified glorification of being independent. For example the suggestion that hiring conformist people is something that just happens. It seems more likely that companies more or less consciously hire such people, because a company where everyone thinks independently would be one where everyone wants to do something different, and nothing would get done, no one could agree on any…
I also often notice a self-serving conclusion that you should quit your comfy corporate job (and perhaps create a startup?). In this particular essay, it's close to the bottom: "Is there a way to cultivate curiosity? To start with, you want to avoid situations that suppress it. How much does the work you're currently doing engage your curiosity? If the answer is "not much," maybe you should change something."
To me, this comes off as a quite paranoid. Confirmation bias is a real thing: if you seek how any particular essay is self-serving, you will find it in every single essay. If everything is self-serving, then it's not a meaningful signal.