Sure - did we discredit him? Is sharing credit with one guy discrediting another?
Why not just focus on the people you want to cover, without asking the unnecessary question "Did Steve Jobs get too much credit?"
Again, could you explain why you chose that headline? Perhaps because it would grab attention?
For me, all it did was turn me off your book.
What's next, some other people writing a book about Scott Forstall or Bertrand Serlet, saying "Jony Ive never coded. Did we give credit to the wrong guy?"