I don't think the author is suggesting that people should put this much effort into optimizing their blog. It's a toy example that's simple enough to explain co

I don't think the author is suggesting that people should put this much effort into optimizing their blog. It's a toy example that's simple enough to explain concepts that can then be applied to bigger and more complex webapps where "don't use JavaScript" isn't an option, like with the Redux example mentioned further down in the article.