Almost correct in my opinion. Church or actually the Jews, from the beginning called people who weren’t Jews heathens, than the church in general started to use it for everyone who wasn’t Christians.
It isn’t until pretty recently believers of the Aesir gods have started to calm themselves heathens probably to mark that they don’t believe in Christianity. But to Christians even Buddhists, Hindus or Pagans are heathens.
Anyway, except for that input I totally agree. It doesn’t belong in this thread. They still believe in a higher power. Ateist does not.