When hiemskr is preaching, Ive noticed he says "ha! they can barely tolorate or presence on EARTH"

we are on nirn, there is no earth.

Heimskr. Thats the priest that screams on the top of his lunges about Talos right?
Its been a while since i saw his name, concidering I brutally chopped off his head the first chance I got.
He was sooo annoying

He means earth as in soil, presumably.

You know, the word Earth can have several meanings. He probably refers to the soil they stand on, the landmass of Tamriel, which is made up mostly of earth.
I doubt he means Earth as in Terra.

This. Unless the word is capitalized, "earth" just means the ground, not the planet.

You want to talk about oversights where Heimskr is concerned? Try breaking into his house after the battle of Whiterun.