I think the author is mixing two separate issues - data (HTML, JSON, database records, etc) and the tools to manipulate it (languages).
IMHO, we need simplicity and clarity in our data structures, APIs, JSONs and powerful (but simple, still) tools to modify that data. If you're using Clojure this library has been great for me recently https://github.com/nathanmarz/specter .
IMHO, we need simplicity and clarity in our data structures, APIs, JSONs and powerful (but simple, still) tools to modify that data. If you're using Clojure this library has been great for me recently https://github.com/nathanmarz/specter .