My brain surgery wasn't for a tumor. I had DBS surgery for a neuromuscular disorder that came on when I was 47 and made it very very difficult to walk. After I had the surgery, I decided that my condition was psychosomatic. https://medium.com/know-thyself-heal-thyself/my-personal-experience-with-idiopathic-truncal-dystonia-dd10f0a13a25
I have not shared any of my perspectives in order to argue that you should believe that trauma abuse is ever preplanned. I'm not seeking to change your mind, and you may be correct.