As we did before the "overly bloated a.k.a modern" web, which is pretty much as you described: disable all the superfluous (images, scripts, css, iframes, webrtc, etc.) and enable one by one those you actually want.

Better, faster, more secure browsing experience.

The issue is in the bloated websites to begin with. Which usually means that if one website is bloated, you just skip it.