The only real argument could be maturity, and Svelte seems pretty mature by now (at least by JS ecosystem standards). And even that is a flawed argument: almos

The only real argument could be maturity, and Svelte seems pretty mature by now (at least by JS ecosystem standards). And even that is a flawed argument: almost every React codebase uses numerous immature extensions. I haven't seen a conservative React developer. The counterintuitive truth is that if something is a good fit for small projects, it is most likely a good fit for big ones too.