What atheist says that? (none) ... This is just another strawman that Xtians dream up, set up, and attack. In addition, we can prove the existence of air ... your little god not at all. We even know the chemical makeup of air and why it works in the environment. We can see it's makeup in history by examining ice cores.
What does the word atheist mean? An atheist is a person who lacks belief in the existence of any deity or deities. That's all. Just like you don't believe in leprechauns or fairies, you probably don't believe in Krishna, Bramah, Odin, Osiris, Thor, Itzamná, Quetzalcoatl, Zeus, Ra, Ba'al, or Kāne. At least I hope you don't.
The word "atheist" shouldn't even HAVE to exist. What's the word for someone who doesn't play guitar, the word for someone who doesn't build fences, the word for someone who doesn't chew tobacco? What's the word for someone who doesn't believe in leprechauns?
What's the word for someone who someone who consistently sets up strawman arguments and uses logical fallacies? Ah, there are several:
1. Sophist - someone who uses clever but fallacious arguments
2. Interlocutor - one who habitually relies on strawman arguments and logical fallacies, indicating they have either poor reasoning skills or use rhetorical manipulation
3. Disingenuous rhetorician describes someone who argues deceptively or dishonestly
4. Fallacist - someone who frequently employs fallacies of reasoning
5. Strawman artist - someone who habitually misrepresents arguments
6. Bad-faith arguer - someone who engages in debate dishonestly, using tactics like strawman fallacies without genuine intent to understand, listen or be taught the truth
7. Polemicist - writer or speaker who often relys on emotionally charged or fallacious reasoning
Which one of these are you?
You're trying to argue with someone way, way more educated than you. And you're failing.