That's a salient difference if his involvement is providing us with evidence, but not if it isn't.
I suppose it's fair to say that if our universe was created by a clockmaker God who didn't interfere with our world, then it wouldn't matter to us whether or not He existed. But since there's a lot of reason to think that God does interact with us humans (like, transcripts of His conversations with them), then it does matter.
Well, I'm willing to discuss the evidence for and against that proposition. Naturally, I would not be an atheist if I thought the weight of evidence was in favor of an interventionist god existing.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.