I noticed no one has replied yet. I don't know anything about strictures, but you should definitely push your surgeon to give you more information and more explanation. Surgery is a big deal. Some questions you should ask yourself: Are you comfortable with this surgeon? Does he/she answers questions and seem to genuinely care about you? Do you have time to consult another surgeon? A good doctor genuinely cares about their patient and is happy to answer questions about treatment. If you're comfortable with this doctor you can usually call the front office, ask to speak to the surgeon's nurse and tell them exactly what you are uncomfortable with and need to know (be prepared to leave a message). The nurse should call back and tell you how to proceed. If you want a different doctor I recommend looking up reviews for colorectal surgeon's.
I wish you the best in finding the best surgery option for you and a good recovery. I know most of us face at least one surgery in our Crohn's journey.