Vitalik's new approach to L2s is how many of us understood them in the first place: Rollups expand the expressibility and customizability of Ethereum security.
Some optimize for a different tech stack. Others for usability, and yet others for scale. L2s let devs and users choose their own adventure.
This is what I meant when I said that the monolithic chain approach is cryptoeconomic socialism and the modular capitalism.
All of TradFi is modular in some way, because it makes practical and economic sense to offer a spectrum. The crypto version is superior however, because it's the devs and users who decide which part of the stack they use, not the Suits or the Man.