Recently, I've visited r/all out of curiosity. Prior to deleting my Reddit account I can't remember the last time I had visited r/all. I was always on my home page, and r/all didn't even enter into my sphere. I would only catch brief glimpses of it as my home page loaded (I don't know if this is because I used RES or not). My wife and I would talk back and forth about things we'd see on Reddit, and they were vastly different experiences.
Considering the minimal content so far on kbin, I do peruse "all" frequently, however my default viewing is on subscription. I don't know how many users defaulted their home page to r/all on Reddit, but my wife and I did not. It seems to matter on how you curate your own experience. I'm glad these choices exist on kbin.