Anything to do with Javascript is prey to churn. Many modern web pages consist of a blank page which loads various bits of Javascript from various servers which then process other Javascript via Javascript templates into the final page. There might be a small minority of web sites which actually are updated so often that these actions are justified, but the bulk of the websites clearly are those where some Javascript-fixated person has decided that "there is no such thing as too much Javascript".
Considering that the language was not very well designed in the first place, putting it on both the web browser and the server, and then insisting on regenerating what could easily have been supplied as static HTML pages by running dozens of Javascripts on both the server and the browser should be enough to convince an average observer that Javascript is being abused in this way due to nothing more than faddism.
Considering that the language was not very well designed in the first place, putting it on both the web browser and the server, and then insisting on regenerating what could easily have been supplied as static HTML pages by running dozens of Javascripts on both the server and the browser should be enough to convince an average observer that Javascript is being abused in this way due to nothing more than faddism.