I like the phrase “good without god(s),” because it reminds us that morality does not come from supernatural sources. But there’s a flip side to that: if we can be good without God, then we can also be evil without the devil, as has been horrifically demonstrated in the Chapel Hill shooting.
The thing is, atheism is just a fact, like the speed of light or the law of gravity. We don’t get any moral impetus from the fact that we obediently accelerate towards the center of the earth at about 32 feet per second squared. Knowing the correct value for the acceleration of gravity may give us a scientific advantage over people who don’t know, or who choose to believe in erroneous values. But that give us no moral advantage.
And it’s the same with atheism. Seeing the absence of the gods, understanding the superstitions and rationalizations that lead people to believe in beings that aren’t there, knowing the history of religion with its triumphs and tragedies—these are all simply observations. They’re not a source of moral guidance or motivation.