if I am the one with blinders on will someone answer my question, would they use BJJ to defend themself if they had a cast on their leg and just had reconstructive knee surgery and walked around with a cane. Also answer the previous question, would you teach an 60 year old women with back problems BJJ for self defense,or how to use improvised weapons?
try not to avoid the question and mention how I am …………
Well, I already answered most of your question earlier, but you've added the bit about defending myself with a cast on my leg.
Since you mentioned knee surgery, I'll presume you mean a full leg cast that allows no bending of the leg at all. That gives me even more motivation than usual to not rely on physical fighting methods for self-defense at all, since 99% of the techniques from any martial art (including Bujinkan taijutsu) are now out of reach. Escape and evasion are probably off the table as well, leaving me with the usual default options of awareness, avoidance, and de-escalation. Fortunately those are normally sufficient.
If I was trapped in an unavoidable physical altercation, then my first option would be to use the cane, drawing (largely but not exclusively) from my FMA experience. My leg would be a significant handicap, but the weapon would hopefully be an equalizer. If they got past the cane, then we would be into clinch territory. My clinch game draws from a number of arts, including Muay Thai and BJJ, but I would be leaning on a set of tactics I learned from a JKD instructor. Once again, the leg would be a major handicap, but you do what you can with what you have. If it does come to the clinch, there's an excellent chance I could be knocked down due to the lack of stability and mobility from my leg. If I got knocked down, then I would absolutely be drawing on my BJJ experience. Once again, the leg would be a major handicap, but you do what you can.
Regardless of what art I was to draw on (Bujinkan, BJJ, or anything else), the leg would be a significant problem and would require adapting techniques on the fly. The only thing approaching an easy answer to the problem of fighting with your whole leg immobilized in a cast is gun-fu.
Getting back to the point other people were making, you started out this thread with a question about Toshindo techniques, but you seem to have switched off into a crusade to prove that Bujinkan rocks and BJJ & MMA suck for the street. In general, starting discussions to argue "your style won't work" doesn't tend to go well.