Moby Dick had a much worse ratio of "size of good novel trying to get out / actual size", in my opinion.
It’s been a long time since I read the book but it was doubtless one of the most enjoyable I’ve read.
I rather take the tedious parts as Ishmael seeing the divine in the world of tedious particulars, although such kludgy pointers as me saying that destroy the real meaning, as the thing represented itself