That might equally be a stylistic choice, but I my gut says it's not.
Besides, is lowercase poetry a fuck you to the reader as well?
If I make a peanut butter and jelly sandwich and offer it to my friend next to me, and someone across the street yells "How rude of you! I'm allergic to peanuts", I will just close the window and continue sharing sandwiches with my friend, not spend time arguing with the yelling guy across the street.