No, the takeaway is that Quebec's universal child care provision correlates with life issues, but there's no information about the causes of those correlations - which could be in the details of how care is provided and its quality, or some socioeconomic issues specific to Quebec, or for some other reason.

>which could be in the details of how care is provided and its quality

This has "true communism has never been tried" vibes. When enacting a policy, you can't guarantee it will come out optimally, so it makes sense to factor in any potential negative effects, even you think you're not going to make them. After all, I doubt the people campaigning for childcare in quebec were expecting the results to be negative.