DY,
In general, in Chinuch you have to strike a balance.
I would never feed them outright treif foods, only “non-kosher” foods (no hechsher).
?? ??? sarcasm.
What the balance is depends on your values. if one considers the trash put out today as “treif”, which I do, it wouldn’t figure into the balance. I would never allow secular entertainment in my home (with the exception of a few pre-screened children’s books). because 99.9% reflect non-Torah values. As a balance, I might allow some frum produced videos, although my kids’ time would be spent more productively learning, reading gedolim biographies and similar productive literature, playing sports or other games, or other healthy recreation.
Anyone who compromises what impure and unhealthy (spiritually and emotionally) media their children are exposed to is making a tragic mistake. (Not to excuse adults exposing themselves to spiritual trash; we’re discussing chinuch.)