There’s an increasing amount of wayland compositors, so I don’t think diversity goes away.
Additionally, hyprland supports plugins which can do most things an X.org window manager could do. E.g. there’s a plugin to support river’s window layout protocol, which allows for creating custom window layout generator.
Diversity doesn’t just vanish, it’s replaced by new possibilities, created by solid protocol specifications with multiple implementations.
Similarily, nixpkgs and other repos continue to grow, just like flathub does too. These projects aren’t killing diversity, they’re enabling it.