>why so many projects can't even be fucked to flesh out a README
Not relevant.
>manpages are more hassle than just googling "how to unzip with tar"
Not relevant.
>Why should I need to do any more work than read a compiler error when I accidentally write "import Webgl" instead of "import WebGL"?
Still not relevant, since that wasn't the example given (correcting typos like this is indeed a very helpful compiler error; gcc does it for like a year or two now).
>RTFM bravado mindset
I really don't think telling people to learn a language instead of typing random things in hope that the compiler corrects them is being a hacker-neckbeard who tells you to rtfm. The example given in TFA is literally: "if you don't know how to import things yet, instead of reading the introduction, googling "elm import", or literally just taking 2 minutes to figure it out, just type what you would do in some other language, and the compiler will gently tell you how to import a module in Elm", or in other words "type random stuff until it works". Should the compiler also correct the user if they write `#import <set.h>`? Or `open Set`? Or `from Set import `? Again, in my opinion* this is neither relevant nor desirable.