In general Next.js has so many layers of abstraction that 99.9999% of projects don't need. And the ones that do are probably better off building a bespoke solution from lower level parts.
Next.js is easily the worst technology I've ever used.
Things will get far worse before they get better. Right now, online courses such as the ones in PluralSight are pushing Next.js on virtually all courses related to React. I have no idea what ill-advised train of thought resulted in this sad state of affairs but here we are.
I'm not so sure about that. We're seeing Next.js being pushed as the successor of create-react-app even in react.dev[1], which as a premise is kind of stupid. There is something wrong definitely going on.
To many people, it's just basic logic: "everyone must want the latest React features, and the only way to get those is with Next, so everyone must want Next".
Next.js is essentially the reference and test bed impl.
Where people go wrong is thinking they need to default to the inherently complex niche feature of client hydration which is a niche optimization enabled by a quirk of web tech.
My point is that it's fishy how they push features that just so happen to be the value proposition of the only corporation that just so happens to be able to implement them.