Probably not that many lives, maybe like a handful of hikers every year I would guess? I think what attracts hikers in the first place is the danger, and the idea that they're exploring an area that is "outside of civilization"

Arguing that broadband internet saves lives reminds me of the argument that Jesus saves lives and the love of Jesus must be spread around the world.

satcoms have been accessible for decades. I have a satellite phone. It's an iPhone 14 Pro. None of this is actually necessary.