Sure, but I can grab the scroll handle and yank it down to 75% instantly. How much superfluous motion do I have to endure on a long page to even find 75%? Can I

Sure, but I can grab the scroll handle and yank it down to 75% instantly. How much superfluous motion do I have to endure on a long page to even find 75%? Can I see how far along I am on the page with the invisible scroll bar that barely renders anything? Is the rendering of its overall progress consistent between applications, if not completely broken? The boring, "ugly" built-in OS widget works extremely well. Every attempt to replace it with something better for one use case inevitably throws out a dozen others that the designer didn't think about.