I don't think anyone wants a reader to be completely lost - certainly not to the point of giving up - but there's something to be said for a book that isn't instantly disposable, that rewards a second reading.
“In every religion there is an element of the supernatural, varying with the influence of pure reason over its devotees.”
“No one uses a ribbon typewriter any more, but your final draft is not the time to try to wring a few more sheets out of your inkjet cartridge.”