While you are correct on the tradition, you are incorrect in thinking the question turns on whether an American citizen is being forced or compelled to believe in a particular god. The question is whether a reasonable person would think that the phrase demonstrates the government adopting a religious position.
On one hand you have religious folks using this very issue as evidence that we are a religious country on another hand the rote and traditional usage devalues any meaning. I certainly wouldn't think that a nation had adopted latin as an official language merely because E pluribus unum was written on the money.
This is true, but even so, does it advocate for the adoption of any particular religion by our government? No.