Once you edit a question, it automatically goes into the reopen review queue. Your question is currently in the queue to be reopened right now. Whether it will be reopened or not will depend on if the community feels like the question is not a duplicate and is sure nothing else is wrong with it.
As a side note when editing a question due to being closed, make the edits to improve your question not make meta arguments to get it reopened. Looking at your edits I see two paragraphs that are meta only and I've removed from the post:
EDIT: This question has been marked duplicate, but I don't find the
referenced question and answer at all satisfactory! It simply restates
the same general answer that I've seen everywhere else. So let me try
to augment or restate my question as follows:
Also, the other answer speaks mostly to playing chords, which to me
seems very clear for thumb behind (especially for barres). I'm
specifically interested with regard to soloing/scales. It seems that
in that case it might not be so clear-cut, which way is better.
I also suggest editing your original question to reflect what you have added.