IANAL but I think they might be able to pursue a case of "vexatious litigancy" against the person. That essentially strips them of some ability to use the legal

IANAL but I think they might be able to pursue a case of "vexatious litigancy" against the person. That essentially strips them of some ability to use the legal system because they've rampantly abused it in the past. It's a high bar to pass, but literal thousands of fake claims might indeed pass it.