Maybe so, although even with more support people they appeared to do some risky things, unless those were staged. Like the short rope maneuver with Will leading Bear down an icy slope, unless they staged that on the base of a slope it was definitely risky, they were crossing without crampons with a tired non-expert actor across a legitimately icy slope. Maybe Bear had a secret belay on? Who knows.

I could see this level of prep: scout the terrain, and run the sequence of necessary death defying events past Ferrell's people. Will gets a week to practice his repels and belays, and maybe a weekend to march around in the snow during daylight hours. The crew decides what additional safety measures to take so he avoids any obvious and deadly falls. Even then things go wrong - the belay out of the copter sure started out badly.

At minimum you're left with a long weekend trudging through deep snow and with a couple belays thrown in - had to be exciting and exhausting from Ferrell's perspective.