I was just now working on clearing out my feed, and I tried hiding some of the categories of feed entries so that I could only focus on deleting the ones I had no interest in. When I hit "Delete All", thinking it would delete only what was toggled visible, it deleted **everything**, including the feed entries that were hidden.
I'm pretty sure this is intended behavior, but I think it would be really handy to have some way to hide certain categories from the feed (like Stories and Posts, for example) and then delete everything else that's still being displayed. Kind of like FurAffinity's "Invert Selection" and "Delete Selected" features. Select what you want to keep, hit Invert Selection, then Delete Selected, and it gets rid of everything you don't want in your inbox anymore.
A similar feature for the feed would be super handy.
Customer support service by UserEcho