Someone has gone through a massive effort of creating this. I'm guessing that he's all in for constructive criticism. Asking for something else and offering only "The writing feels a bit off to me" isn't very helpful or polite IMHO.
I really wanted to bookmark it for further reading since its a topic I’ve been meaning to dive deeper into. I was happy that the target audience wasn’t beginners since it assumes familiarity with promises and async/await.
But I kept parsing the numerous “warnings” and the writing style in a way that made me feel that perhaps I’m not the target audience.
I’ve come to realize that I am much more likely to make the most out of content when the writing style gels with how I think.