Originally Posted by Spoonrobot

The whole wide world of bicycles considers geometry the same way. It's not any culture, it's the status quo, for a reason.

Fitment or Fit is the word you're looking for.

For most people, 90-120mm will put distribute their weight appropriately, allow them to use all the positions offered by drop bars with good posture and present them with a comfortable fit when the saddle is positioned over the BB to maximize power.

80 and shorter do not allow these things to happen as easily as well as causing the bike to wander during climbing and feel sluggish and slow.