What is culturist?

Establishing ones own culture while accepting new traditions and allowing old ones to be accepted as well.

Accepting my lover's holiday tradition shows how culturistic I am.

culturist - meme gif

Somebody who judges people based on their perceived culture. Similar to a racist but with no reference to race and skin colour.

Man I hate Americans! They're always so shallow and obnoxious! - Dude! That's culturist!