To be fair most of that bloat comes from the Javascript; if your CSS stylesheet is above, say, 100Kb, odds are that you’re doing something wrong.
The major damage that I see is on another level: raising the bar for what you’re expected to know, just to make a site and publish some stuff. It’s the wrong way to go - the development of new tech should enable more people to do more stuff, not the opposite.
Configuring your bundler properly has to be done once per app, and it can significantly cut down on your app’s size.
People expect to see apps, not web pages, but we can be smart about it. Tree shaking has been around for years now, if you build your app properly your bundle will only include the pieces of code that actually gets referenced, e.g. if you pull in a 2 megabytes large library but only use it for one function, only those few lines from the lib will end up in your bundle.
CSS stylesheet is above, say, 100Kb, odds are that you’re doing something wrong.
Hello, non minified bootstrap reporting
I would absolutely consider shipping non-minified bootstrap doing something wrong
