McCain is not really saying that the information in the “dossier” is wrong he’s just saying that leaking it was wrong. He characterizes it as “damming” twice in the interview.
If he is stupid enough to believe this crap we are lucky he lost in 2008 and as a US senator this still makes him dangerous as he has the judgement of a 16 yr. old and the temperament of a 5 yr. old.