I appreciate the post on the update!
I did use the "all" search, I made search engine shortcuts for all "hn", stories "hns", and comments "hnc" in my chromium* search engine settings. The all search now returns nothing. I like to cast a wide net in search results. I don't think I'll search for many of these categories in most queries, if pressed, but I also won't discover them. May motivate me to index hn myself as some of my friends have.
I appreciate surfacing the other formal and informal categories of posts in the hacker news repertoire, and it's fantastic to be able to filter strongly by category, but I don't like that I will now have to always pre-select, pre-commit, to the singular category I want to find matches in. I suspect some halfway solution, like match-counts of other categories, would be nearly comparably expensive to returning results for all, in terms of query cost and maintenance or complexity burden.
I'm also seeing text styling issues in the menus in settings: white text on white background, in both default and experimental skins, and light and dark modes of experimental skin. I checked in incognito to be sure it's not my extensions affecting display, nor Brave resource blocking.