It's worth mentioning that a lot of modern architecture (in single family & small-to-mid multifamily developments) is essentially dictated by money: what sells the best (typically the design that maximizes square footage), what is cheapest to build, and what is capable of passing for a given state and municipalities zoning and building code. People shop by location, price, and square footage as their primary search c…
It's arguably a tragedy of the commons. The people who live there get maximum value for the money while everyone else has to look at a bland monstrosity every day.