While there are some valid concerns in the article, it mostly is just a rant against SPAs, which seem to be unfamiliar and subjectively disliked by the author.

As with stacks, this is highly team-dependent. I for one do not crave for the time of constant back and forth between backend-frontend mindsets and stack lock-in because of rigid query/rendering requirements. This may not work for the author's team of mostly "backend-mindend" devs who wish for more control over output, but is much preferred for a more diverse set of members (or especially departments).