2. Technically it's not even in Nevada, it's in the Pyramid Lake Paiute Indian Reservation
3. Kind of the entire point of Burning Man is that you are raising a city out of nothing and breaking it down again within the span of a couple weeks against all odds and in one of the least hospitable places on the planet. This is by design. As a participant you are given ample information and time to plan for such eventualities, they are not necessarily predictable but you definitely can and should be prepared for the worst out there. To be blunt, this is what they signed up for. It's a prepper-lite ("radical self-reliance" is one of the founding principles) kind of event. I say this as someone who really enjoyed my time there in past years -- everyone is welcome to attend if they feel up for it, but they are also expected to know what they're getting into and to carry their own weight if things get bad. Not that they will be left to die, as "civic responsibility" is another of the principles embodied by the population of Black Rock City for its duration.
Protip for interested readers: anyone calling Burning Man a "festival" outs themselves as having absolutely no idea what they're talking about and are perpetuating the kinds of narratives that contribute to the flippant and commercialized miasma that has settled around the event over the past years.