They manage not to bump into any other air user on the way down through blind luck and belief in the 'big-sky' theory and convince themselves that their technology (GPS) and superiority as pilots, make it a safe option.
Is this not then also true of anyone who flies a procedural approach (or any any other for that matter) with no radar coverage ?
Just because it may be good airmanship (or perhaps even a legal requirement, I cant remember) to be in communication with a ground station whilst operating under IFR not everyone does, I am sure we all know one or two people who fly imc in (Civvy) singles and speak to no one.