Counterpoint: mithril.js has been feature complete for years, and the culture around it is to resist change for the sake of change (e.g. it didn't jump into the react hooks bandwagon like vue did, even though it's arguably more similar to react than vue is)

Ecosystem-wise, it encourages integrating with high quality vanilla libraries directly instead of having a react-this or vue-that for everything under the sun.

This approach has worked well, IMHO.