Phillip Roth was controversial from the start. He wrote about sex before one did. He wrote about being a modern Jew before one did. He was sexist (in my view) but honest (to his vision) and wrote with a clarity that moved me when I read his first works in high school. His Plot Against America seems prescient now.
You may not like Phillip Roth, and you may not have read anything he wrote. Yet that he influenced American culture is without question.