I've commented a bit on this "org" (and it's affiliate) to others before but not so much on here. What they do is, basically, they use dodgy terms and methodology which makes the "numbers" look bigger.
At one point, they even attempted to conflate minors sharing porn with each other with abuse. Really.
If there is a choice between underestimating even a bit and wildly overestimating, they seem to pick the option which will lead to a wild over-estimation. This is important to consider.
From what I remember, one of their "reports" lacks a temporal condition (so former criminals might be assumed to be currently offending) and they also refer to what might be legal conduct in a state or country as criminality. Or they might refer to conduct which used to be legal decades ago as such.
In 2022, this guy attempted to run and disseminate a "survey" to try to make it appear as if his proposed policy ideas were more popular than they actually were.
He is known to frequently make misleading claims and refuses to acknowledge the negative drawbacks of his policy proposals.
#auspol