I'm honestly not sure what conclusion to come away from this data with. It seems to be bolstering a (typically conservative) viewpoint that parenting is really important and that bad or unfit parents need to be kept in check by the state because the harm they may do to their kids can last a lifetime.
This article focuses on shootings, neglectful parents, etc. But what if we focused on more controversial things like only having one parent in the home or missing, specifically, a father figure, religious attitudes of parents, or even (to be maximally controversial) same-sex vs opposite-sex parents?
If those things were found to have impacts on children that last into adulthood also (since the data implies that our childhood shapes us so much), I doubt the author would agree that we have a collective responsibility to keep children from experiencing the negatives of those scenarios
I don't think it's at all unique to conservatives to believe that parenting is important. I would say conservatives tend to want to enforce (and sometimes preferentially support) "traditional" households, leaving up to people to self organize their support systems. Liiberals tend to want to accept households as they are but put in place systems to compensate for the specific conditions that might be suboptimal in a child's environment.
I'm biased, but I believe the liberal perspective takes a more open mind to letting people live the ways they want, under the assumption that this is likely to be locally optimal versus trying to coerce people into externally imposed lifestyles. I don't think it's controversial to say that two parent households correlate with better outcomes. But that doesn't mean that every family is better off that way. Some children are way better off if it's easy and unstigmatized for a single parent to get sole custody if the other parent is abusive.
This article focuses on shootings, neglectful parents, etc. But what if we focused on more controversial things like only having one parent in the home or missing, specifically, a father figure, religious attitudes of parents, or even (to be maximally controversial) same-sex vs opposite-sex parents?
If those things were found to have impacts on children that last into adulthood also (since the data implies that our childhood shapes us so much), I doubt the author would agree that we have a collective responsibility to keep children from experiencing the negatives of those scenarios