I think Larian mentioned somewhere that your dream person is an actual person who will come into play later in the game, but I don't think the dream person and the absolute are one and the same. Are there any abstract gods in FR?

Larian's Biggest Oversight, what to do about it, and My personal review of BG3 EA
"74.85% of you stood with the Tieflings, and 25.15% of you sided with Minthara. Good outweighs evil, it seems."