To see much of the Options / prefs at once, or scan a long list like keyboard & mouse shortcuts, the prefs UI needs to be lengthened a lot.
Many apps remember the preferences last screen size, when the number of main groups / option headings or data lists are quite long.
I don't know what's involved with adding a search function on pages like these?
The browser (Fx) won't search in any of these prefs pages, though it will in certain types of help or settings files.
It also looks like it'll allow sorting by a selected column heading - as it highlights them, but alas it doesn't.