The real issue here is there's a part 2 (linked at the end of the article) where they get the io_uring implementation to be twice as fast as mmap. So it's a clickbait title for a part 1, which gets resolved in part 2.

So they crunched out 2 articles, one of which is just ragebait. And they both seem LLM written. Maybe they have some cool advice, maybe not... but it's not a format I enjoy reading.