This is meant as a native global shortcut for Orion. I don’t want to use spotlight as it would bring up other results that I am not interested in.
Imagine using cmd+opt+N which brings up a little search window which lets you type in a search or URL and instantly opens that desired URL. Or typing in !yt + search query and it opens the Youtube search.
The convenience here is that the shortcut works everywhere. I work with a lot of different Spaces in macOS and don’t want to keep an Orion window in every space for a quick search. I hope this makes it a little bit clearer.