I'm not so sure Next.js is as SEO-friendly as people claim. The JavaScript bundles are pretty heavy, and the page still needs to hydrate before it becomes fully interactive. There are attempts to speed this up with React Server Components, but the developer experience there is already worse than with Phoenix components.

Next.js server performance isn’t great either - honestly, it’s pretty bad. Pages don’t feel that fast for users despite all the tricks and optimizations. In my opinion, metrics like LCP and others are much easier to optimize in older, more traditional frameworks. Unless you’re building a full-blown web application, a classic web page will almost always be faster and simpler to deliver without all the Next.js complexity.