It isn't dwm "port", rather it's an independent window manager with some inspiration from dwm but also from other places. Notably it doesn't share the minimalist design philosophy, it's designed with a powerful configuration and interaction api rather than relying on patches.

dwl[0] is closer to a port, it's explicitly trying to work the same as dwm for wayland with the same philosophy, although it's still an independent project written from scratch.

[0]: https://github.com/djpohly/dwl