I'm not saying that stylistically modernism would be more popular. But the questions asked there are of an 'unlimited budget', 'pie in the sky' nature. If they'd asked Americans, many of whom see little to no value in public spending, if their new library or courthouse could be made of marble and feature statuary, but it's gonna be 20-30x the cost, I wonder how they'd respond?
Fair; though I think equally fair, many of the features people find desirable in various forms of pre-modern architectural styles (Deco, Edwardian, Victorian, Romanesque etc etc.) can in fact be emulated in modern form without 3-storey lobbies done entirely in real marble.
As opposed to looking at the grandest of the grand, I would look instead to 55 Mercer for showing that you can deliver a human-scaled, older-style building form, which will have broad appeal and convey warmth.
Likewise, I'm not personally a big 'marble-everywhere' kinda guy; not even with an unlimited budget; that said, if so desired, one can do a pretty good 'fake' these days out of quartz or even porcelain at considerably lower cost, with better long-term performance, in such a way most people would never know the difference.
The point of which is to convey, the argument about much (not all) of Brutalist architecture and likewise much of the Modernist period is that it can read as cold, drab, and unappealing, not merely to a few people, but to a lot of people.
To bring this back to SLC, I just don't see the merit in it. I think both
@Urban-Affair and
@egotrippin make the case well; and I don't think I can improve further on their collective wisdom.