> But I am not sure I can blame those front-end developers. Also in a lot of cases you can build the fastest website with minimal markup and only the necessary

> But I am not sure I can blame those front-end developers. Also in a lot of cases you can build the fastest website with minimal markup and only the necessary CSS/JS libraries for the base functionality but if then for "business reasons" you need ad networks, google tag manager, analytics scripts, third party support popups there's only so much you can do as a front end developer to keep the site fast.