There is a Loviatar servant there. Loviatar serves Bane. But they imprisoned the priest of the goblin god who also serves Bane. Larian wanted to make a plot by Bane, Bhaal and Myrkul the center of the Baldurs Gate 3 story. The Absolute amulet is the symbol of Myrkul. The altar in the goblin camp fits that story, too. Maybe they decided at some point to make them hide behind an invented god "the absolute" or they thought they had a more intersting idea for a new enemy and replaced them with the absolute.
"Edowin was going to the ship to find a "weapon" but gives no description. His "siblings" believed they were going to rescue survivors." Did they believe that? They attack the player once they find out that he/she is a survivor. I am starting to consider the option that everything is so confusing because Larian changed the story and the rewrite is incomplete
I sometimes use thought experiments. I don't necessarily believe in every idea I post for discussion on this forum