Not OP, but I originally xmonad because Haskell. I’m still on it because it is the only WM with a “contexts” feature/extension https://github.com/procrat/xmonad-contexts
sway devs discarded its feature request https://github.com/swaywm/sway/issues/4044
and I personally am more interest now on compositors/WMs that implement Smithay (Rust) instead of wlroots (in C). Specifically https://github.com/MagmaWM/MagmaWM, which I suppose will be easier to extend.
Yeah, that’s odd. But guess most projects are using the master branch anyway, e.g. https://github.com/MagmaWM/MagmaWM/blob/0ec02c92d63dd43d45fa3534f565fa587db506af/Cargo.toml#L20-L21