I am an independent advisor responding to TechCommunity inquiries.
Thanks for the heads up that the Bookings additional fields are added to the confirmation. I know many users have requested this capability in the Bookings feedback portal but I did not see it on the roadmap with a rollout date.
Here are my thoughts. The Bookings app was designed as a self-scheduler for external clients, patients, students, etc. which frees up the staff members from scheduling appointments. Since the client is completing the form with their answers to the questions, it appears that MS figured to include the client's response in the confirmation.
I recommend that you give Microsoft your requirements of having the flexibility to include or exclude the appt questionnaire responses in the confirmation. Here is the link to the Bookings feedback portal.