The author is a volunteer and the software is a labor of love: of course it's personal. Such projects thrive when the author feels like they are giving a valuable gift to a community which is receiving and appreciating it. Being required to submit your creation through an impersonal "review" process which rejects you in such a way that it's obvious nobody cared enough to even look is not just a buzzkill: it's an insult.

I would walk away, too.