I was confused for a second, but turns out DMS rebranded the 'Dank' to 'Dux' a few weeks ago [1]. I've been running DMS + Niri for nearly a year now with no intentions of switching anytime soon. Given how often I've historically changed shells/DEs, this is the ricing equivalent to settling down, getting married, and having kids.
Unfortunate name switch, as in latin "dux" means "leader" and it was a title most recently used by Mussolini
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There are several other mentions of this in other threads. Its entirely possible it is an oversight. Yet I would also not be entirely surprised if (at least for some people) it is a well-chosen subtle troll, given that there are people that would find such a thing funny in this space (= recent heavily LLM-driven wayland ricing, aka hyprland, omarchy, also neovim, etc).