Yeah, I wasn't sure myself tbh. The page buttons worked fine, and I was basically able to continue my book as usual, but with the growing knowledge that I may not be able to select another one after that point...
When I did the factory reset I had already basically given up, but I hadn't twigged at that point that it would basically brick it. I have managed in the past to get some life out of the touchscreen by plugging it into a PC (no, don't ask me why, noticed by accident). Now awaiting replacement, which is going to be the end of the week, missing it already