Although I have many Christian friends, I am a Norse pagan just like my father and his side of the family. We have never believed in a "satan". At the same time, it doesn't for one moment mean or even imply we don't believe in a god. And similarly, I am not so arrogant that I'd tell anybody that their gods are fiction.
The meme is for humor, so do yourself a favor and don't get triggered over it. Life is more enjoyable when we allow ourselves to laugh.
