You can argue that by remaining with their mothers they will become indoctrinated into the "religion" / "cult" of their parents, which endangers their welfare from the perspective of the vast majority of Texans / Americans.
I am not sure how effectively children younger than two can be indoctrinated, but the image of nursing infants being torn from their mothers does not seem positive for Texas CPS, nor particularly consistent with their legal mandate to protect children from "immediate" danger.
The problem is, that LAWS are being broken, and RIGHTS are being trampled, and if allowed to continue, what does that mean for the rest of us?
Which laws or rights?