I have the intellectual humility to be proven wrong and not ignore the issues. So you could present a credible case, but you just ignore it when the inconsistency of your arguments are pointed out (ie saying reports about bragging are WP:UNDUE, then suggesting the statement is made 3 times as long. Talking about BLP, when the allegations have been widely published in Australia. Then presenting the NZ police as experts on internal motivations and psychology. If the police comments had been widely reported then it would be fine as a quote, but since they weren't it's not notable (nor a reliable source) and surely undue weight.