Yet, is it ok that so many web developers use bloated JS libraries that causes websites to be multiple MBs in size when it could easily only be 10s of KB? How i

Yet, is it ok that so many web developers use bloated JS libraries that causes websites to be multiple MBs in size when it could easily only be 10s of KB? How is that not a bigger waste? You’ll get no argument from me regarding bloated JS libraries. But the reason why preload was created to make page downloads faster, not reduce asset sizes. I keep hearing the argument that it’s a waste to prefetch assets that might not get used. Preloading assets you don’t use can be a waste of bandwidth because that bandwidth could have been used to download something you’re going to actually use. Also, preload bumps up the priority of that resource, perhaps jumping ahead of an asset you really need. For users with the latest devices on broadband connections, it may not make much of a difference. But when you’re cell connection is two bars and you’re on 3G instead of 5G, it matters.