Logic behind high lvl base designing

Having almost maxed out defences.. with walls remaining, I was looking through all the top player bases and found that most of them have a very similar layout with a square outer ring divided into 3-4 sections and a central th section defended by xbows, teslas and air def, with multiple layer walls with single gaps in between. I was just wondering what is the logic behind this design that almost all the top players are using, instead of the multiple sections that we see in the slightly lower trophy level bases.

Bases with a lot of segments are to better to protect resources from mass goblin rush and easy access. With high trophy gemmers with maxed bases elixir is gemmed and gold is irrelevant.