One of my responses was the same as Ken's: ("Nice way to fund a vacation."), but I see more to it than that. There's the film-making, the potential of a wider audience seeing that terrain and maybe feeling more invested in protecting our wild areas even if they'd never travel through them.
And as far as begging for money goes, why not? As long as the project is fairly and honestly described, sure, ask. No is putting a gun to anyone's head. There are other people's adventures that I'd be willing to support. Jill Fredston ("Rowing to Latitude") does truly expeditionary stuff, self-supported for 3 months at a time (with her partner) in very spectacular and remote places. I enjoy knowing people do that sort of thing and it causes me to dream bigger and consider more ambitious trips myself.