Jacob never rubbed two braincells together about how plants work 😅 Why would it be green on the inside? No sunlight there, while it needs to transport the nutrients between the leaves and the rest of the plant...
Reasons I hate hedges. Plenty of bushes that have leaves throughout and are genuinely flexible throughout, not to mention fruit-bearing, but noooo, let's plant this garbage everywhere because it holds its shape and makes a cheap "wall".