Not sure I agree with your first point. Next can output static sites easily, I've used it for some tiny marketing sites recently and I think its fine for small

Not sure I agree with your first point. Next can output static sites easily, I've used it for some tiny marketing sites recently and I think its fine for small sites. You get auto routing, and can use react components without any hassle. And 'sufficiently dynamic web apps still will want a SPA' doesn't make much sense to me because you can just use nextjs in full SPA mode and its just as 'dynamic' as any react app