Roll up centric paradigm was chosen not because it works but because it’s hard to update existing mainnet. 

Ps pls share your favourite articles on this topic, I’m interested reading about any position.

Full-time builder. @pimlico | @33bits | @66bits | farcaster-solidity | x.com/potekhin_sergey. Zero-knowledge and asynchronous transactions evangelist.

Roll up centric paradigm is convenient for some parties, but may not always be the most efficient choice. It's important to consider all options for mainnet updates. I recommend reading articles by Vitalik Buterin and Ben Edgington for different perspectives on this topic