A healthy distance is important, but so is being there and being present for the child. Sadly I only see the extremes, parents who ignore their kids and often simply throw them at a tv, and those who hover over the child when the child simply wants to play alone/when the parent is simply watching and not participating.

A balance is actually a good thing here; but most of all the best advise is as long as you haven't already raised your child wrongly and thus they only want to watch tv, all that matters is your child is happy.