when was the last time an L1 "breakthrough in tech" led to a truly popular blockchain use case?

aren't all the most dominant apps in the space (DEXs, NFTs, memecoins) things that would've been possible with ETH tech from pre-2020?

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- All alternative PoS when ETH was still PoW made it more inevitable that ETH would switch

- Celestia et al. led ETH to add blob storage or anyways it DAS was discovered together

- state channels on BTC eventually lead to Plasma and Rollups

Founder /kiwi-news, a decentralized Hacker News

- PoS: eco friendly crypto txs
- rest: cheaper tx fees for all sorts of dapp use cases like NFT minting en mass, ENS, stablecoins, paying bills in crypto, lending

what are the actual end user use cases any of these things has made possible?