Atheist or Agnostic?

[Mudhammam]

Is the proposition "God does not exist" also "bullshit bereft of evidence"?

It's a proposition that lacks existential import. So, yes, and no.

You could ask, "Is the proposition 'Seven headed dragons do not exist' also 'bullshit bereft of evidence'"?

There's no evidence that seven headed dragons have ever lived, and there's no evidence that excludes the possibility that seven headed dragons have ever lived. The default position is simply, "I have no reason to believe that seven headed dragons have ever lived."