I guess this is only of tangential relevance to the post, but Ctrl+n (which should work the same as arrow down) has been broken in Spotlight as of macOS Ventura.
The fact that this completely standard binding has been broken in a crucial macOS app for 5 months basically tells me that Apple does not care about the "Emacs-style" shortcuts in macOS.
It stopped working in safari too (for picking items from the dropdown of suggestions when you type into the address bar). Even if you edit `DefaultKeybinding.dict`, some of the bindings just don't take. Also broken in some places is 'alt-b' and 'alt-f' for forward and backward word movement. I've been remedying this with BetterTouchTool, but it isn't the same in some places.
The fact that this completely standard binding has been broken in a crucial macOS app for 5 months basically tells me that Apple does not care about the "Emacs-style" shortcuts in macOS.