I don't believe that. If there is enough evidence, including a child's testimony, sadly, then he can and will be convicted. His personal problems do NOT excuse him from molesting children. Have you heard the adults crying when they tell of the shame and horror at having been abused by people they trusted in their childhoods? Juries are not going to be fooled by neighbor "character witnesses."
Juries may not be fooled, but one juror will be. I wish it wern't true.