I do actually agree with you in general, felt Windows was easier to navigate with the keyboard - especially menus - but that specific one can be done reasonably easily as long you've enabled "Use keyboard navigation..." in Keyboard preferences > Shortcuts:
1. Cmd-space to get Spotlight, "pref" to match System Preferences (on my machine at least), Enter
2. Search is auto highlighted so type "keyb", down arrow, Enter
3. Tab to focus on tab bar, left/right arrow key to move between tabs (this one is a bit buggy, seems the "Text" tab steals the focus so you have to shift-tab back to the tab bar)
It’s nowhere near as good tho. You frequently have to type the name of the entire utility. On MacOS I can open Disk Utility by using CMD space to open Spotlight and type du. I can do this all as one single shortcut without even looking.
On Windows I need to type a lot more and then navigate a list of wordy descriptions in the hope of finding Disk Management. At least now they’ve added Win-X.
1. Cmd-space to get Spotlight, "pref" to match System Preferences (on my machine at least), Enter
2. Search is auto highlighted so type "keyb", down arrow, Enter
3. Tab to focus on tab bar, left/right arrow key to move between tabs (this one is a bit buggy, seems the "Text" tab steals the focus so you have to shift-tab back to the tab bar)