There is much wisdom in this assessment, Herb. I do think in some cases open communication with some SB's can lead to great improvements if they are open to learning. People often make assumptions and pre-judgements of one another's behavior as to the other person's motives, when the actual reality is something quite different.
Once I had an SB make a hasty retreat at the beginning of our SR but did not communicate with me clearly why. It turned out she had misinterpreted something I had said during our first BCD and assumed it was something that turned out to be a simple miscommunication. [OpSec prevents me from elaborating but the point is made]. To her credit, she remained open to further communication by not ghosting and we talked it through, thus saving the SR. [At least until the next misunderstanding!]
My feeling on it is always try to work on issues of compatibility by communicating. These girls are often young and inexperienced and as you say, Herb, lack the life skills to succeed in their chosen path, and by extension, human relations. [Which includes sugaring].
It might be a lost cause and it's better to cut bait, but it may be worth at least trying to salvage something if there is potential to make improvements.
As Daddies we need to be a guiding light and the adult in the room, helping to help her navigate life's many pitfalls. [As well as navigating in the bedroom!] If she is not communicative and remains ignorant of her weaknesses, simply wish her well and send her off into the world to find her own way.
There will be other SB's where she came from that may be more open to guidance.