I think I see where they're going with this. Most self-publishing and print on demand services use what's called "perfect binding" where each page in a book is individually glued to the spine. The problem with this method is it's more likely for pages to fall out like autumn leaves. The reason this method is popular for low budget projects, is that standard book binding requires pages to be first stitched together in signatures (bunches of 8/10/12 pages depending on the binder) which means that books have to be formatted to have a number of pages which divide evenly into the signatures (hence why there are often blank filler pages at the start and ends of books), which is more expensive because it requires some oversight in the publication design, and is a bit more costly (because of the cost of stitching the pages into signatures first).

Standard binding is much more robust, though I do wonder who they'll have handling their design services and wrangling their printer and binder - often they're separate businesses, so you have to drive pages to be bound, and make sure everything's been trimmed just right. There's a lot of organization required and I'd have expected that before they asked for funding, that they'd at least do a short run test job (small runs aren't cost effective - but you could get a mock-up for around $60 to show you can actually put a book together).