It was easier to navigate at night in Salt Lake before smartphones than almost any other city. You still don’t need a smartphone today to find addresses by their coordinates, it’s dead easy. You can instantly tell which direction to drive and how far away it is by the address too. I do not understand why you think a simple grid with predictable coordinates is difficult. What naming system or city layout do you think is easier?

One of Salt Lake’s defining features is how much easier addresses are than other cities. “Though the nomenclature may initially confuse new arrivals and visitors, most consider the grid system an aid to navigation.” https://en.wikipedia.org/wiki/Salt_Lake_City#Layout

Drive north (mountains on your right) until you get to 900 North, take a right, and drive down until you get to #1259.

As opposed to finding 'Oak Terrace', when a map book has 4 pages of 'Oak St' and its variants (a problem I ran into pre-GPS in Orlando)