If the 80s/90s was an era of pretend and fake, this decade is turning out to be one of true refinement and subtle elegance ...not crassness and kitsch.
However, let me change a little of that around...
"If the c19 was an era of pretend and fake, this century is turning out to be one of true refinement and subtle elegance ...not crassness and kitsch."
Presto, you got Modernist dogma. Not that Modernism is bad or anything; I'm pointing more to what such judgment naively, clumsily, and in some cases destructively blanket-eliminated.
Okay, so as you're suggesting thru the RAH vs Trump Taj Mahal comparison, we might be dealing with something more "degraded" now. I'm not disputing that fact. However, taking the bigger-picture view, to use the Trump/Versace alibi to condemn MCH is as clumsily insensitive as using the Robert Taylor Houses alibi to condemn the Weissenhof Siedlung.
The 80s, and 80s PoMo, isn't all about simple Dallas/Dynasty et al--it's a lot more interesting, much as the 50s was a lot more interesting that its June-Cleaver-hating critics would have wished. All I'm arguing for is to take a more knowing, comprehensive, and even sensitive (yes, sometimes sensitive-to-insensitivities) view of our collective past, and yes, that includes the 80s. Heck, that "comprehensive view of the past" approach is itself archetypally "PoMo 80s", in the *best* (i.e. smartest, and an advance on earlier blinkered approaches) way.
For that matter, your "true refinement and subtle elegance" characterization of the here and now is something that, in its turn, sells the here and now short. That is, sure you can be a design purist, but...stop being such an unyielding design purist. It's as depressing as your narrowly TrumpVegas characterization of the 80s. Besides, too much of said refinement and elegance makes me wanna reach for my Peaches
who subverts it all by, well, embracing her (and our) inner 80s...