A lot of people here (including the author and myself) who have written multiple production applications using React and Redux will know that "just install next

A lot of people here (including the author and myself) who have written multiple production applications using React and Redux will know that "just install next.js and call it a day" is a wild oversimplification. In fact, some of us were earlier adopters and enthusiasts of SPAs and flux architecture. You're seeing more and more write-ups on the problems with this approach because the early adopters are now long past the honeymoon and are entering long term maintenance.