Yeah I would assume there will be blanks for them to fill in about how it reached the point where his former enemies and allies banded together to decide David must be ended, with extreme prejudice, no capturing or anything,
And it looked like in the rewind scenes, in other parts of the commune the soldiers are taking liberties, like didn't some of the girls get dragged into a room?
And yes, season 2 really didn't go too far plot-wise. Just seemed like the same primal struggle with David and the Shadow King, told repeatedly in different visual styles.
Some of the imagery is striking, like the big-headed monsters of season 1. But I kind of suspect that after this show is over, it will be images and idiosyncratic visual design which remain with those who watch the series, not so much the story elements or the characters.