So curious. If the OP kept the sexist trolling out of the post would it have found some agreement?
Say this was a dad with a MAGA hat who got into genitalia swinging contest with another man while with his kid? If the op in that case said most of the blame was on the shooter but a father should be aware that getting into a road rage altercation is taking on a risk of harm, not just to himself, that subjecting your child to that risk is reckless, and that he should keep his toxic masculinity in his pants at least while parenting? That he is not blameless for the tragic outcome.
FWIW and a bit of an aside, this is not blaming the victim. The victim is the kid, not the parent who engaged in aggressive maybe even bullying behaviors to an unknown person.