Is this in Montana? I looked up the cost, and it wasn't easy to find. You have to click on several links to get to the actual PDF which lists the fees. It's not an excessive amount, so I think the mountain man was really just trying to make a protest statement.
I agree, though, the laws are in place to protect the wildlife and prevent abuse.

Conservation License ($10) + Montana
Fishing License ($15 for 2 consecutive days,
$43.50 for 10 consecutive days or
$60 for season).
Nonresident Deer A Combo or Nonresident Big
Game Combo licenses include a season fishing
license.