you can launch it from a comment linking to r/All (with a as upper case) iirc. How long that'll still be available, I have no clue, but I like to imagine the devs who work on reddit realise how braindead of a decision removing it is but have to please the shareholders by removing any obvious access of it

I think they took the wrong signal from the people avoiding the default feed since it's filled with days-old posts you've already seen from subs you haven't joined.