The point of substance there is:

     Being uninformed may result in accidental injury or death.

rather than your blanket advice to just avoid risk altogether.

    The Division of Minerals is legislatively mandated to conduct the State's AML program to identify inactive mines, rank their degree of hazard, and carry out activities to secure these sites

Clearly people do go into abandoned minesites to evaluate their current state.

The back end of https://www.spglobal.com/market-intelligence/en/industries/m... carried a much larger database of global abandoned mines withmore infomation on why production lapsed (a good number may still be economically feasible with modern techniques) that wasn't simply limited to Nevada. That data should still be there on request.