So far, many people have considered transparency to be the main advantage of blockchain. This is true — but excessive transparency actually creates new problems, especially for real-world adoption.
This is where the concept of Layer-1 privacy blockchain becomes important: privacy is not built as an additional feature (Layer-2 or applications), but becomes a core part of the blockchain protocol itself.
This article briefly explains why Layer-1 privacy is needed, as well as the benefits if the blockchain ecosystem truly adopts it.