While io_uring certainly is great, but it is a: Linux only. The main interest of browsers are Windows and Mac as most users are on those platforms. b: Limited

While io_uring certainly is great, but it is a: Linux only. The main interest of browsers are Windows and Mac as most users are on those platforms. b: Limited to modern variants of the kernel - this is a greater problem the more features that is needed. Not everyone wants to be or can be a kernel hipster.