I really like Svelte and want to see it succeed but I think it's more likely that React will somehow adopt innovations from other frameworks and remain dominant.
I'd love to be wrong about this. Especially since I'd rather not use tools from Facebook if possible.
Svelte was the fastest I went from "oh god here we go, another framework" to "this is freaking amazing, why has this not been built already". To your point about avoiding React because of Facebook connections. I will say for all the shit that Facebook has dumped on this planet, releasing React will probably be remembered as one of the better things they did.
I'd love to be wrong about this. Especially since I'd rather not use tools from Facebook if possible.
Solidjs is also interesting IMO.