sadly thats 100% accurate and for that alone i dont think it gets released.
i never did think they would release it regardless. going back through to "finish it" would be a huge mistake imo. release it as is, maybe aside from mixing/mastering tweaks but dont work new stuff onto it further.
if half the tracks or more are instrumental, so be it. it wouldnt be "tainted" then at least.
if they are so worried its unfinished vocally, just release the finished tracks that have vocals as an ep.
seems simple to me. but i do respect whatever they decide to do, which again imo, i dont think they release it at all, sadly.