Obviously he could have been better prepared, and he made a lot of mistakes, but I wonder if the judge overstated things by saying the hiker was “was reckless and negligent in his preparation for a hike of this magnitude from the outset.” He had a gallon of water, food, phone (with mapping app), battery back-up for phone, stove, sleeping bag, etc. And this was for an intended 17 mile day-hike on moderate terrain. In general, that doesn’t sound crazy to me.
He made big mistakes. He wasn’t prepared for the heat, he was on the wrong trail and lost, and he didn’t download the map to his phone. I guess it’s subjective, but I see a lot of newbies making mistakes, and I remember making some myself. In fact, I got off-trail last summer and had to bushwhack quite a ways. He believed that his situation was life-threatening, and he may have been correct. On the other hand, the way he lit the fires was reckless, but most likely he was in bad shape at that point and not able to make good decisions.
Personally, I think it was a good idea to hold him responsible, but the magnitude of the punishment/fine seems excessive. Maybe the judge is trying to send a public message by getting a lot of publicity.