Null's explanation of Drew DeVault lore was a little off in the recent MATI. I think prollyanotherlurker is planning to write a more detailed clarification, but just briefly:
There are two competing systems in Linux for drawing windows to the screen. One is called X11, and has been around for decades. People don't like working with X11 because it's a tower of duct tape, and many parts of it are poorly documented.
The other is Wayland, which is comparatively newer. Wayland has been around for I think a decade now but still struggles to support a lot of system configurations, the biggest being NVIDIA GPUs. As an aside, Wayland bros get very mad when you point this out, and Drew DeVault has actually written a
post (now deleted) that compares people who don't like Wayland to anti-vaxxers and flat earthers.
Both of these projects are currently maintained by
freedesktop.org
Neither of these tools are enough on their own to get a fully functioning desktop environment, they are just systems for drawing rectangles on the screen, and handing out handles to buffers that applications can stick their graphics data in. You need some kind of program that controls how those windows move, what happens when you press a key on the keyboard or a button on your mouse to modify the state of those windows, draw the statusbar, etc. In X11, this tool is called a window manager. In Wayland, it's called a compositor.
This is where Drew DeVault and Vaxry work in the stack. Drew developed a compositor called Sway, and Vaxry developed a compositor called Hyprland.
Hyprland does not compete with Wayland, it competes with Sway.