Other than the particular crime, please explain how your statement is different from "If you didn't dress so provocatively, you wouldn't have been raped."
Same reason it is OK to tell people that avoiding smoking reduces their chances of getting lung cancer or that wearing a condom reduces their change of STDs, but it is not OK to tell someone with lung cancer that it is their fault for smoking or to tell someone with an STD that it is their fault for not wearing a condom.
If anyone's right to identity and self-expression is exemplified by keeping wallet and keys in their car, then, yes, I suppose they should certainly assert their rights by keeping valuables in their car!
It’s essentially free to anyone who can MITM your connection.
He didn't say "Hide your stuff better", he said "Don't treat your car like secure storage".