This will be a long post, apologies beforehand.
I read a summarized translation of his blue flame II book regarding his episode in WC 2016. I would just like to share something to offer a different perspective. This is just a personal opinion, of course.
I have mad respect for Yuzuru. Actually, I can empathize 100% with his condition and choices since I used to compete too (not FS but a type of artistic sport) and I had similar experiences like him and has been in a similar position. I competed with sprained ankle at times, and I couldn't walk for a week after it was over. What I would like to say is that, when you worked hard for something and spent so many time, energy, soul and hard work leading to it, it was extremely hard and painful to admit defeat by withdrawing even before fighting rather than to compete with injury. (Because frankly I don't really see what else could have been done besides withdrawing, considering his condition). The outcome for Yuzuru is that he gained a silver and helped japan reclaimed 3 spots. Considering the circumstances, I still think that this is a success and he+his team has made the right decision by proceeding in competing.
Secondly, I do think this constant need to find someone responsible as well as a subject to blame for his injury which cost him his world title (e.g: JSF, his ANA team, Brian, even Japan''s medical doctor etc), needs to stop. Really, stuff like this just happens, and sometimes there is not much we can do about it. At least if it was me, I would have had already beaten myself hard enough if I lost because of an injury, and having to deal with people trying to tell you (+your team) what you should have done and have done wrong is not really helping. After all, the athletes themselves are the one who knows their body best. And Yuzuru is a grown 21-year-old adult, so I believe he would have known better than any of us here about what to do under such circumstances. I understand the frustration of having a favorite athlete losing. However in sport, competition or a game, you win some you lose some. Nobody wins everything the whole time, that is just not how things work in sport and actually it is the exact reason why watching sport/competition is exciting. I do feel sometimes that because some people look at him more like that of an idol/celebrity, they treat him like one. Yuzuru is an athlete - a really good, talented and strong one - and athlete gets injured. Though worrying is natural if you admire a person, at times like these it seems like sending him positive vibes would help him more than being frustrated over his defeat and trying to find fault.
Now on a more positive note, he seems to still stay positive and motivated. He also took time off ice, finally listened to the people around him to skip ice shows and perhaps this is a sign that he listens to his body better. Though this does not mean that he would not get injured again (I actually doubt any athlete would be completely off of injury) this looks like a good start. He also already started learning his new programs

(there are also a report of him landing 4Lo so I am expecting that the recovery is on track)
Alas, I am hoping he would be able to continue delivering mesmerizing performances. The previous season is already behind us and let us all welcome another season of thrills, frills, blings and excitements!