Nah thats also part of historical tradition (in Slovakia). Folks doing that could earn way more working regular jobs down in city (even say Poprad, closest one). Its their passion, hobby, and there is a lot of respect in community for them. Even normal hikers can take some smaller load up, its encouraged and appreciated. It doesn't have to be 2 full 50l alluminium barrels of beer or similar 120-150kg loads.

In alps for example all this is done by choppers these days, a tradition lost.