On prohibited areas - there's a very simple reason for them, answered here - https://youtu.be/n5Bi6wiRFN0?si=60yx-E6G9HIzFMM2&t=4030 (1:07:10 if the link doesn't take you right to that part of the video)

(The rest of the interview is well worth a listen too, as are all of Dom Herbertson's podcasts)