My objection is narrower: calling atheism a “nonstance” can obscure the fact that, in practice, people often do move from “not convinced” to “probably false,” and those are logically different positions.
I think specific concepts of god are "probably false". But not 'god' as a wider concept.
Also, I’m not denying people can engage in philosophy, ethics, or theology without making a truth-claim about God’s existence. That’s fine and unrelated.
I mean if they do, they can still engage in it.