Even though I hardly use scroll bars by grabbing them with the mouse cursor, I still want them around as visual hint what part of the page is currently shown (first thing I do on a new Mac is to enable scrollbars to be always visible).

In general, user interface shouldn't be designed against an "average user" because there is no such thing in the first place (for instance see: https://www.thestar.com/news/insight/when-u-s-air-force-disc...).

Let us configure this shit.