What was your understanding of the words "snow flakes"?
Fluffy, cold specks of white rain that fall from the sky.
Made me think of a line from Fight Club: "You are not a beautiful and unique snow flake." Quetzal's usage was pretty easy to understand: Delicate self-centered prigs who think the world revolves around them. Which made bybee's retort so uncalled for and bizarre and distasteful.
Since I have never seen the movie "Fightclub", that meaning wouldn't have ever occurred to me. Then again, there is a rather large age gap .... meaning some of we older folks aren't aware of the current slang.