Biggest problem is with the approach of doing a revolution, while evolution is possible. Reactivity is mentioned in the article and examples are given with frameworks that would need a rewrite of anything you have in react and relearning everything for the team.

But it's really not needed - you can just use signals in react with the preact-signals package (works with preact and react and standalone) which has been created 3 years ago: https://preactjs.com/blog/introducing-signals It can even skip the virtual dom and diffing.

The issue is not React per se. Just look at what the ecosystem has to offer. You can also speed up your loading times by using preact. And if you don't like a compile step use a package like htm and tagged templates for a JSXish syntax. And then move your "store" outside of react with signals etc. There is enough innovation happening, no need to always look at the other side.