It's probably a good idea because some GitHub browser extensions will automatically hide forks from search results, under the assumption that basically all "forked" projects are drive-by patchjobs. I'm not sure this is stopping anyone who would be useful to OpenBrush, but maybe it is.
Another good reason to defork is that, as we saw with the youtube-dl fiasco, there are some non-software-related reasons that MS may feel inclined to offline the entire fork tree. That'd be the bigger concern for me.
Another good reason to defork is that, as we saw with the youtube-dl fiasco, there are some non-software-related reasons that MS may feel inclined to offline the entire fork tree. That'd be the bigger concern for me.