I mentioned it somewhere else, but he didn't look in his best ever shape physically and that would imo support your presumption. If he had been extra motivated, he would at least have gotten into outstanding physical shape, even if match fitness was an issue. Maybe deep down the pressure and the expectation was too much (we can't forget that Momota's "redemption attempt" amplified the normal pressure that a world #1 in any sport has anyway, when they want to win home Olympics.) and he also knew after the AE that match fitness was not achievable. As for the coaching... the bottom line is a terrible final result (that much can probably be said already, barring possible good results by NO, AY, and YW) and players who are still as nervous and as insecure as they were years ago. Very few players also seem in top condition physically. Long term coaching thus can not be judged favourably. I also have to question match preparation. KM led quite comfortably in both games. 10-5 in the first, 11-8 in the second. Whatever Nakanishi said or advised then, obviously didn't work. On top of that, KM looked really puzzled by the placement of Heo's shots. He lost many rallies because he had not the slightest clue where the shuttle would go and was late to move as a consequence. Lack of match fitness, yes, but it was so obvious that the analysis of the opponent prior to the game can't have been too great, either. I'm genuinely worried about the human being Kento Momota now. Given the many emotional setbacks he has faced over just a couple of years, I can not see him not fall into a hole. I hope he has good support system.