A hiker lost for 24 hours ignored rescuers' phone calls because they didn't recognize the number

I’ve read several articles about this and the headline is misleading. Somebody grew concerned when he hadn’t gotten back by 8pm, and they sent out a search party at 10pm. He was missing two hours when they sent out a search party. He was on trails and didn’t consider himself that lost. He walked through the night and made his own way out. He had no reason to think anyone was looking for him.
It’s unclear who reported him missing. Friends or family back at a campsite or cabin, or did a ranger find his car?
If he did have friends or family waiting for him, it’s unclear why he didn’t call or text.
But for myself, my phone’s battery wouldn’t last 24 hours in the woods. I’d have had it turned off so if it did get to be an emergency I could call someone.
But then, in this century, I’d have had my handheld GPS with extra batteries and a recorded location of my car.