Indeed!
I typically type something into the filter box to try to find a relevant setting for what I am trying to accomplish. And that (used to) gives me a filtered inner-sidebar, which helps me understand what settings-groups are involved… and then I often click in the inner-sidebar to focus on one of those groups and clear the filter text, so that I can explore if there are other adjacent settings that I need to fiddle with.
A problem with the Admin Sidebar overall is that it is trying to mash together the legitimate independent modules (e.g., “Customize email style”) with a slew of “pre-filtered subset of Site Settings” things without acknowledging that the latter are indeed just filtered subsets of the complete “Site Settings” pile. The inner sidebar is/was the mechanism for navigating that space in either direction.