(i worked a _little bit_ on dwl) each wlroots upgrade is a pretty small diff on the dwl source. the annoying part is, as dwl is configured with patches, every patch author has to update their patch to the new 0.x, as dwl is quite minimal, and thus has no stable api. that being said, obviously, dwm doesn't have this problem :)

also, for dwl, the issue is that the initial author (not the guy that wrote that notice) is sorta mia, and he has control of the repo on codeberg, so we'd probably need to fork to be safe, and he may not want to take on project lead. (he checks every patch for merge conflicts with one another and upgrade breakages, god bless him lol)