It's a localized example of the effect urban structure can have, not a denigration of the entire city. So, please, don't take it as a dig against Chicago; I rather like Chicago in many ways, and much of my family lives there. I used the above example only because it's one of the more extreme cases I've encountered.
As for the "it's easy to find addresses!" argument in favor of large-scale grids, well, yes, but in my experience this is fairly unimportant for the actual residents of a city. Most people don't spend any significant amount of time travelling to completely random locations, and to the extent they do, every city evolves methods of way-finding that suit it. I think it's much more important for the residents that the city actually be a nice place to live, and part of that is being beautiful / interesting.
[For tourists, yeah, extremely simple way-finding can be a significant advantage, but I don't think cities should be designed for tourists over the needs of those who live there...]
Salt Lake City grid system was also not designed for tourists. It was designed for travelers, yes, and I believe it was part of the vision that SLC would be looked at as a model city, with a strong Cartesian/classical influence. According to Wikipedia, "In these western cities the streets were numbered even more carefully than in the east to suggest future prosperity and metropolitan status."
Also, a grid system made it easier to subdivide the land which was newly part of the US.
So to say that the grid system is influenced by tourists is a bit of an exaggeration.