From this Reddit comment:

Working with svelte, you do feel like it purposefully solved pain points in react:

-bloated syntax (svelte has succinct syntax and very little boilerplate in comparison)
-reactivity (svelte automatically has exhaustive dependencies and a simpler reactivity model in general)
-data fetching (svelte has an async/await paradigm instead of clunky useEffects + state)
-local state management (simple and intuitive syntax vs. useState)
-global state management (svelte stores are very lean compared to Redux)
-styling (svelte colocates markup and style)

It’s not a direct successor by any means, but in many ways it’s a spiritual successor, and generally very attractive to people who have worked deeply with React.

Reminds me of A quick rant on React I found on Reddit, and how React sucks (kinda).