The author is fine with other browser side rendering tools. The issue is the need to needlessly render templates client side by parsing out the DOM each time.

The author is fine with other browser side rendering tools. The issue is the need to needlessly render templates client side by parsing out the DOM each time. There is no need for this, and doing it is pointless. Better to have the template render in a state where you don't need to do the dance that Angular does. This consumes a lot of CPU, and a lot of battery life. This impacts performance and user experience.