I don't dispute that, but we have both multiple written sources about the practice and the Tophet of Carthage is an actually existing cemetery containing both y

I don't dispute that, but we have both multiple written sources about the practice and the Tophet of Carthage is an actually existing cemetery containing both young children and animals. So while there is no definite evidence in one way or the other, I would argue it's not outlandish to assume that the written history is to be trusted here.