Well, either they did or they didn't. The confusion comes when we try to apply modern outlooks to people from a different civilization, and end up saying "well, I'd never do that, so neither would they," and we end up ignoring evidence that doesn't fit our preconception of the world.

A simple fact of history being controversial is a function of bias. The worship of Moloch and its attendant ritual of child sacrifice is attested to in many scriptures.

Not really. My ancestors were Norse and practiced human sacrifice. There are also some archeological findings indicating that they also practiced child sacrifice. Doesn't bother me at all, I sm not my ancestors.

It is, but really human sacrifice was the norm, not the exception, in preclassical ancient societies.

I think the most charitable interpretation of OP is that there is no controversy over the fact that pagan Semites practiced ritual human (child) sacrifice.