I suppose any non-embellished account or diary of someone walking a modern Camino would actually be quite dull to read for a second party. It's cool and exciting for the person doing the walking, but I don't think it translates well to paper (or digital?).
I mean how exciting and interesting is say a narrative of 30 days or so of waking up early, getting my pack ready, setting off, looking for a coffee shop, eating a few snacks or a breakfast, maybe getting rained on, stopping for a break somewhere, getting water at a fountain, saying "buen Camino" a bunch of times, chatting away with fellow pilgrims you befriended, find an albergue, check in, take a shower, take a nap, find dinner, go back to the albergue and chill out before bedtime, go to sleep and repeat in a few hours when you wake up.
I suppose the writers know this, and as they want to sell their books (nothing wrong with that) they decide they need to spice up the journey. A few domestic dogs yipping in the distance become packs of wolves. A fairly steep ascent up to someplace like O'Cebreiro becomes Hillary and Tenzing's trek up to the peak of Everest. A night sleeping in a communal albergue in a room with 30 other pilgrims becomes spending time in a maximum security lockdown in a prison. The list goes on.
Why let the truth get in the way of a good story? ha ha