I would not necessarily. It depends.

They are pretty close in mindset (how state works), but Svelte is more established, better polished, has better docs, with a larger community, and of course, great animation / transition support. Svelte 5 does not have dev tools at the time of this writing, just like Solid. SFC is great, Solid has no comparable offering. It also has robust error handling, better than Solid.

That said, Solid has a way better Tanstack Query implementation. (No idea why we still don't have a proper Svelte 5 version today.) It is reasonably close to React that you may feel it should be easy to switch – though that is deceptive. Most of the work is not in the templates but in how the state works, and for this reason it is easier to port Solid code to Svelte or Vue than to React. Developing in Solid is smoother, because it is not a custom template, but just TypeScript. Less concepts to learn, if you are well versed in React.

Both can be good choices for different use cases. And then sometimes React is the right choice.