Do you have the right to be an atheist?

[robvalue]

Uhh.... You seem to be talking about gnostic atheism (the claim of knowledge that there is no God). That's a minority position. Standard atheism can't be "wrong" because it's a statement of non belief. You are also conflating regular stuff with the usual supernatural definitions, for what purpose I can't guess.

Most atheists don't claim knowledge, just a lack of belief in supernatural God claims. They aren't generally talking about aliens.

I don't think many atheists would deny there may be aliens out there more powerful than us, so... does that make you happy?