Reread the first two sentences. Alternatively, I will see this as yet more macguffin speculation.
Everything is speculation but mcguffins are not rare in D&D...not in the least. You can find mcguffins laying around everywhere in D&D, really it's no big deal. It would downright insane to have a D&D adventure without at LEAST a handful of mcguffins. Hell, our party gets one from the start in the form of Shadowheart's artifact.
