Oh I think it's very much still an open discussion. But it made me realize (from a Discord discussion) there's nothing proving they are the Listener gods and that line is an argument against it. Your dawnshard idea is interesting, I've seen it before from you. I have my doubts because of that fella carrying a dawnshard, known to bind mortal or voidish, up to a temple (that's from memory); doesn't sound like an entity, sounds more like an object. But it's possible from what I know
You should get on Discord bro. It's partly why I post far less now. There are some great discussions and you get them with the argents, pagerunners, blightsongs and of course chaoses and weiries.