Atheists Also Bound by Presuppositions in Philosophy and Ethics

Even atheists are subject to presuppositions in epistemology, metaphysics, and ethics. There is no such thing as a "default" system when it comes to a status quo. Lockean civic philosophy is what became the norm, that doesn't mean people don't have the right to question it.

No he's right. It is a profoundly religious stance, in that the "religious anti-religion" is often commitment to faith based autonomous epistemology. In Heidegger, atheism fails because it still uses "calculative thinking" (subject/object) to ignore the question of Being.

Utter retardation from you. You only managed to deduce a descriptive 'is' in human history. That is not the same as grounding ethics on a more fundamental, ontological level as an ought. I get Hume diverted to subjectivity, but if you do that, you surrender your own worldview.