In a sane world, it should be as easy as sending them a counter-notice and if they decide to escalate, sending a cardboard cutout of yourself to the court with

In a sane world, it should be as easy as sending them a counter-notice and if they decide to escalate, sending a cardboard cutout of yourself to the court with a printed "no copyrighted materials (except for some screenshots, which is fair use for illustrative purposes) exist on the website" sign to win the case. We are not living in the sane world, of course.