The complaint in the article is technical, but my issue with the SSR + hydration approach is that it doesn't actually work for the users. Mainly because if you

The complaint in the article is technical, but my issue with the SSR + hydration approach is that it doesn't actually work for the users. Mainly because if you need a page that is indexed by Google, there is a high chance your users will browse it and open pages in new tabs. So the approach of "there is a small initial penalty, but everything is faster later" no longer applies -- you get that initial hit quite often.