* https://www.cnn.com/ is 1.3MB of data.
* https://www.nytimes.com. is 5MB of data.
* https://www.reddit.com/ is 6MB of data.
* https://www.google.com/ is 400KB of data.
* https://www.facebook.com/ (not logged in) is 2MB of data
* https://twitter.com/home/ is 1-3MB of data depending on the ads it decides to show.
Those are all on-the-wire sizes, so after gzip compression and whatnot.
However, this is good, because those are great examples of how browser lazy loading is going to help. When I loaded Reddit it pulled down 7Mb of data, but more than 5Mb was images. Looking at the content above the fold my browser downloaded about 4.5Mb that it doesn't need until I scroll. This change to the HTML spec will get all those sites first load below the average size of a Kindle book. Awesome.
And there is some irony that I am likely tracked heavily on what I've read. Certainly on what I note. So it isn't like I'm clamoring for no scripts. Just find it odd that the push for web applications has destroyed the use of web pages.
Web apps are a different story because they often load a couple of meg of JS before anything happens, but so long as things are being cached correctly that's only a problem occasionally.