Re: Web developers?
Of course they don't care about performance and optimisation. These days being a web developer means having to use every single framework, widget, piece of unnecessary third party Javascript, user tracking and "analytics" you can get your hands on, in order to pad up your cv so that you can easily move to another job. The irony is, when you move on to that next job, the developers there have also used all those frameworks, widgets, etc on their site so that they could easily move on to other jobs too, so it turns out you actually need to know all this unnecessary nonsense to be able to do your work.