nextjs being 4 times slower latency wise than plain react or even vanilla js is pretty funny
But the "vanilla" benchmark generates some 3x as much HTML and the react one generates half, so they aren't comparable.
https://youtube.com/clip/UgkxvcydgHKf-76rZasr0ykMZZol57apKp9...
and whether you are more productive with it or not is completely up to you.