ChainCatcher news, Vitalik Buterin tweeted emphasizing that Layer 2 (L2) technology has finally become affordable, which is key to the widespread adoption of decentralized finance (DeFi). He proposed as early as 2020 that low transaction fees are the foundation of success in the crypto industry, and this has only recently become a reality.Robert Sasu, a core engineer at MultiverseX, responded that L2 currently has low fees only in centralized situations. Vitalik disagreed with this view and pointed out that Taiko is a decentralized based rollup solution, indicating that the fees for decentralized L2s like Taiko have reached an affordable level. Sasu agreed but added that rollup-based solutions are still in the minority and hopes that more projects will migrate to this architecture.