That's an admission of guilt in my book.
Kinda like OJ.
Yes, I can see an upset and indignant parent saying such a thing, and not as proof pf guilt either.
Taken out of context it would seem far more damning than it is.
Doping your kids so you can have dinner out seems pretty shaky to me, but it does not make them murderers.
Ultimately, if fitting, they will answer to a higher judge who already knows the answers.