See also their abstract:
"An Impossible Proof Of Pythagoras"
Ne’Kiya D Jackson and Calcea Rujean Johnson, 2023
https://meetings.ams.org/math/spring2023se/meetingapp.cgi/Paper/23621
And news reports at the time:
https://www.theguardian.com/us-news/2023/mar/24/new-orleans-pythagoras-theorem-trigonometry-prove