Yea i have a fetish for antennae... I'm a fan of high-tech aesthetics and Richard Rogers is my hero. But even if the the towers were as you thought they were, I still have a hard time understanding why it would be worse than a flat inaccessible roof. "pointy hats" is clearly a pejorative, and implies something tacked on, as opposed to part of the vertical expression.
To me, only the ones in the left image are "hats"
http://www.planetware.com