While those are not hideous, they're hardly anything to write home about, much less call beautiful either. Compare them with a traditional budhist shrine, national monument, or church, and they're seen as the regression to ideology and "architect as god" arbitrariness that they are.
Hill of the Buddha, Sapporo:
https://en.wikipedia.org/wiki/Hill_of_the_Buddha
Cathedral of Saint Mary of the Assumption, San Francisco:
https://en.wikipedia.org/wiki/Cathedral_of_Saint_Mary_of_the...
Spomenik Memorials, Former Yugoslavia:
https://www.spomenikdatabase.org/
None of those are ugly.