Not only these days, its a practice that starts almost since the development
of the well manufactured 12-14 quill stems. Using smaller triangles you gain a stiffer frame with less weight.
I don't know why some cyclists see the offset on seat posts as a fault.
I always try to set my saddle as close as the legth of my legs allow to
the vertical that defined by the rear wheel axle and i always prefer 12-13cm stems instead of 10cm.
Of course you have to find the geometry that gives you the head tube
height that you need depending on your riding style.
i like your use of the "enter" button
looks like a really elaborative haiku