There is a workflow specifically for screenshots.
It’s not just about browsing, it’s about previewing directly inside Alfred.
You shouldn’t be, it’s highly unlikely that any update to Alfred will ever break Recently Added. An update to macOS might, but I have zero control over that.
That has always been possible, and is explained in the configuration itself how you can list the contents of multiple folders. It’s exactly the same method as Recently Added, separating by commas.
Like I said, if you prefer Recently Added you’re more than welcome to keep using it. But the reason I deprecated that workflow is that for a good while I had been thinking of improving it with previews, and then with the new views I realised that the next version of Recently Added would basically be a repeat of Thumbnail Navigation, so it made more sense to add the fast navigation feature to this one. In other words, the deprecation is the best scenario if you want to keep the list view.