Asking the server for new HTML means you can't show changes until you've done a roundtrip with the server. That means no optimistic rendering or immediate feedb

Asking the server for new HTML means you can't show changes until you've done a roundtrip with the server. That means no optimistic rendering or immediate feedback for local changes, such as a comment being made or an option being set in a modal that opens up related settings, etc. I think it's extremely useful to have a system that allows the client to respond to changes locally on its own as the default case rather than treating local interactions like a strange one-off exception. React only re-renders the components that have their own props or state change. There seems to be a popular misunderstanding that React that makes you re-render the whole page in response to changes, but that's not how it works.