The payload probably won&#x27;t increase as much as we&#x27;d think thanks to gzip, and you can apply the styles via server-side rendering rather than waiting for the JS to load.<p>We also need to consider the time from request to a ready page: if you&#x27;re on an incredibly slow connection, then having the styles immediately rather than waiting on a second round-trip is a huge win. I agree that there are pros and cons, but some of the pros are actually in performance; it&#x27;s not immediately clear which technique is more performant overall in what contexts.