Is it any worse than the sheer amount of horsepower it takes to load a page on any modern web site? In addition to all the scripts that load from a thousand third party domains for tracking and embeds, you have all the responsive design code and giant images. It may not be much for one PC, but when you consider how many machines are out there grinding away parsing web sites, it adds up. The end result still doesn't present much more meat and potatoes information than the web of yore.