I believe a lot of the hatred of 5-over-1s is because in a lot of American towns and cities, that 20th century architecture they would've contrasted against is just gone. When everything is surrounded by post-1970s functional modernist architecture, minimalist modernism just feels like it's simplifying (often seen as cost reducing) things even further. Plus a lot of the materials they use make it feel even cheaper. Featureless fiberglass or plastic panels haphazardly jutting out of grey painted stucco and concrete with no sense of visual balance exudes "budget" in the same way that buying counterfeit "ADJDAS" pants does.