One of my favorite architectures is not anywhere real, but Morrowind (Elder Scrolls game). All cities are astonishingly beautiful. More, they all sort of fit together internally. They form a coherent style. Plus the interiors and the exteriors are both gorgeous and work together.
See Ald'ruhn: https://elderscrolls.fandom.com/wiki/Ald%27ruhn,_Manor_Distr...
and Vivec (not sure I went there years ago): https://elderscrolls.fandom.com/wiki/Vivec_City_(Morrowind)?...
The function of every building is clear from the outside, and it's clear they are part of the same picture/vision. Of course that's because the game designers made them all at once coherently.
So more than any style being particularly bad, I think We have mainly a lack of vision and coordination (the greatest problem of modern humanity). Each building does its own thing. So we over-regulate each building so they can't be too deviant (because there is otherwise no say in style). The result is jarring, boring, uninspired cities.
(See my proposal of a new economic system to address this: https://news.ycombinator.com/item?id=29043752)
A good start would be having communitarian, and maybe city architects responsible for (at least part of) every project in a certain region. Each neighborhood should be designed as a whole to be most coherent, functional (for everyone, not individually), psychologically well designed.