Worse than overdosing in the streets?

This seems like a classic case of the perfect (being off drugs completely) being an enemy of the good (off the streets but on prescribed heroin).

IMO the family is actually much better off, especially children. A big part of the problem is over valuing the addicted parent and the shadow life they should have been.

Not fixing the problem let's them keep a lot of blame for reality being far from expectations on the new environment, and probably that is pretty healthy. But it doesn't mean this solution is actually wrong.

Being able to not be a criminal, to not be arrested, to not die on the street, this is dramatically better than the alternative. No one can be prevented from buying street drugs in western countries, where there is demand someone will meet it. But this is far better for society too.