no, not dead. almost dead.
the whole project was starving because of lack of maintainers. before the shutdown pretty much the only person doing anything with the repo was dstftw and he only bothered to show up like once a month to merge a few critical bugfixes. other stuff like fixes to less important extractors, improvements and new extractors were brushed aside and ended up hanging on the pr's list for eternity (iirc there was something like 700-ish pr's in september). i tried adding a new extractor some time ago and even though it got reviewed by someone, it just hanged there until the dlc fork came along and finally merged it.
so yeah, not exactly dead, more like a bleeding corpse.