As a backend developer I can't help but feeling we have gone full circle. As in, how is this effectively different from regular server side HTML? I know this is

As a backend developer I can't help but feeling we have gone full circle. As in, how is this effectively different from regular server side HTML? I know this is rendered on the client, and I'm not doubting it's usefullness, but what advantages does this setup have? I also guess their demo app isn't representative of what problems this setup intends to solve: https://youtu.be/wM5KDPG9Ugk?t=2866 https://youtu.be/wM5KDPG9Ugk?t=2866 The example whould have been extremely simple to implement in JS/TS on the server side, it would also be much faster and have better concurrency, caching and scalability options.