My 2c: I think svelte is overhyped and a poor solution to the problem it's trying to solve. First of all, I am tired of ridiculous metrics like how small svelte is when it's a really small example, and it's one or two lines of initial boilerplate. The thing that really set svelte apart was it's better syntax and experience when it first came out. I think that was when react class components, and vue 2 was still promi…
Re: Sapper -> Sveltekit, you might say the same thing for React Router users who adopted Reach-router, back to react-router and are now on remix-router or next.js router. Also I found it weird that you mention Evan You WRT vite as a counter to why Rich might be up against stronger devs, but Rich made rollup, which was foundational to Vite's bundling.
Rollup is cool, but it's a very different beast from a f/e framework. For a lot of projects, migrating from rollup to webpack might be a few hours or a week. Migrating from svelte to react, is months if not many man-years.