I mostly agree with the author. After working a couple of years with React client render and API a pure server render seems to be a way more productive. For my recent OSS project (https://github.com/docusealco/docuseal) I use server render everywhere except of the 2 most complex/dynamic UI parts (drag&drop form builder and the signing form). I think just figuring out which approach fits best for which part of the software is the most important thing, doing both SSR and CSR in a single project is completely fine when done right.