I gave up a while ago trying to remember in which preference pane each setting was. There are just too many buttons that are moved every other version. I cannot live without Spotlight in system preferences.

They made it so "user-friendly" it is no longer user-friendly.

In recent years I've been using the search bar a lot anyway, since the modal nature of the old System Preferences app wasn't great for quickly checking through several settings screens. And I often forget where some settings are — the taxonomy is not always so clear.

The new Settings app seems like an improvement to me. The vertical list of settings categories is easier to quickly scan, and it remains visible all the time. That alone is a great improvement, and makes it quite a bit easier to navigate the (huge) list of available settings.