That's immaterial to the discussion. The comment I replied to simply stated: "Displacing God as the center of life." They aren't arguing that god matters, it's our displacement of them.

So, on the existence of god, we have two possiblities: God does exist, god doesn't exist.

1. If god doesn't exist, then we're unhappy because we're displacing a false god as the center of life.

2. If god does exist, then we're unhappy because we're displacing a real god as the center of life.

In that discussion, god's existence in fact doesn't matter, it leads to the same outcome.