When Robert Fischer achieved an unprecedented scores in the pretenders matches prior to winning the champion title, I believe that the biggest factor was not the quality of the play of Fischer, but the way he mentally unbalanced and broke his opponents, who absolutely did not give a performance they were capable of.

Which are totally subjective. And they dont really make sense. He thought he was too relaxed? How would cheating OTB against Carlsen be relaxing? Carlsen is being really unprofessional here, even if he turns out to be correct. But the window has closed - we will never have evidence that he was cheating at this tourney.