That’s good to know! And I’m sure it’s beneficial information for those that were unaware of that. However, (unless I’m wrong) the method you described requires you to be deliberate and precise in the placement of your own bang; i.e. bag of d holding or bag of holding d wouldn’t work. As I often just start typing whatever I want to search/look for and only notice midway/afterwards that I hadn’t specified where I would like to search, the built-in ‘bangs’ in Firefox/Chrome just wouldn’t cut it unless I would try to rewire my behavior.

DuckDuckGO for the bangs, with a custom !bang made for my favorite SearXNG instance; on which most of my ‘googling’ actually happens.