That's because it's the poverty, not the single mother that's the problem.
The kids with the absolute best outcomes are raised by single moms who have enough income to not be stressed, aren't getring jerked around by spiteful fsthers and the courts, and have adequate and consistent child care.
But people like you never want to talk about that.
Pretty telling that prople like you always bring up the struggling single mothers to bash women with but you never bring up the successes. Those don't fit your narrative.