If he was misquoted before in other interviews as some people claim, then why would he keep calling these same people to grant them interviews?
People have been making excuses for decades. I remember the early days of JP2 where people claimed he was "a prisoner in the Vatican" and made to do things against his will.
People will believe what they want to believe.
Fact is
all Popes are culpable for their actions and inactions. And for anyone to claim ignorance on their behalf is just insane. Even if the journalist did lie, the Pope would have a duty to very publicly correct his statements bearing in mind the scandal he would cause if he did not.
If he does not correct them, one can assume he meant it.