I've pretty much quit thinkng the ripper does any good for corn stubble going to beans.  For corn stubble I prefer to use the Excellerator.  Doesn't make it black at all.  Never an issue getting planting done on time.  "It'll be too wet"  "It'll never warm up".  BS.  I plant as early or earlier than most around here.  Beans don't seem to care.  I think they greatly prefer a lot of trash.  I don't have the best beans around if you believe the "coffee shop talk" but I've never had a "wow that was a bad year" either.  I'm fine with hitting the average every year.

A few years ago we spread dry fertilizer and ESN  on bean stubble in the fall and "worked it in" with the Ex.  Ground was hard and the Ex would only go in maybe 2".  Next years corn did 201bu.  Not the greatest but that was perfectly in line with what everyone else got that year.  That field is "highly erodable" because of some hills and that was a dry year.  I was quite pleased seeing 201.

To prevent a problem before it happens I still like to run the ripper every few years.  Haven't had a problem yet so I don't know how long I could let it go. I know for a fact I don't like working ground in a wet spring if it was ripped the fall before.  With the Ex in the fall, there is no real concern with spring mud.  Just go.  After ripping, the ground gets mushy.  I don't think that means the un-ripped ground is compacted.  It's just the ripped ground is, well, mushy.

So to answer your question, I don't know.  It's a nice feeling seeing stalks turn black or ripping up chunks thinking, "That'll grow some corn" but I think it might be just that, a feeling.