I'm not really sure if I can agree on stability. For all its warts and flaws, you can largely still write React 18.x the same way you wrote React 0.x. There's many new features and fancy tools in your pocket, but underneath it all, you can take the knowledge you had of 0.x and go straight to writing 18.x. It might not be whatever is the current vogue best practices, but it will work. While React has had many breaking changes over the years, I would argue that all of them are fairly minor, whereas Vue, Angular and now Svelte have introduced big breaking changes. Stability wise I feel like React comes out on top in that regard.

I do agree that Vue is clearly the better paradigm, but unfortunately it's still very much lagging behind React in terms of adoption. I think big breaking changes might have a considerable part in that, it's hard to sell that upwards.