I have used paper towel for bedding for the first week of my chick’s life, and they have never eaten the paper. It does need to be changed frequently as it becomes soiled with droppings.
I wish I could say the same for my own chicks. Despite the chick feeder and waterers at their disposal and easy reach, mine were voracious little eaters that tried everything they could peck at. There were only three of them, but they proved as efficient as a shredding machine to lay waste to the journals I left in their brooder one unsuspecting day.
I agree 100% with you on the frequent changes, chicks make a soiled mess of such papers very quickly as they age up. The advantages of a wire mesh floor is that any feces they do falls through the gaps to the waiting surface below, making for an easy change-out bedding and chicks who can't eat, walk or sleep in their poop. They certainly couldn't get at the journals I used later once I put them on the wire mesh floor. They were pretty dismayed about it xD