I mean, fair enough about accepting new canon, but I don't want Jergal to become the Star Wars equivalent of the Force. I don't want to look at a plot hole or inconsistency and be like "must have been Jergal!" - it fundamentally ruins stakes in any story.
I've also edited the OP to include all the info that everyone who contributed so far brought together.
I see where you're coming from. It all depends on how Larian (and WOTC) intend to handle the Lord of the End of Everything moving forward. My forum post about him compiles some evidence that even though he is certainly
helpful, and displays some level of compassion at times, he is
not a good guy and is very much the mastermind to end all masterminds.