At the same time, all this syntactic sugar makes the language's surface area gigantic. Like it's almost C++-level complex, and then you would have to properly understand all the interactions between this matrix of features.

That's absolutely a valid language design and many people prefer that, but I personally prefer a bit smaller language with a bit more IDE auto complete, but where you never have to think about what exactly does a line do.

(And then there is also Go that falls off the other edge of the cliff with useless if err checks spamming the code making actually functioning error handling hard)