Hi Kurt
Obviously you are correct especially with the Katzenpapa's video where black has a lost game after move 4.
Here is an eboard from China that has been on the market since 2019.
Notice that the control unit at the side is slightly similar to the Chessnut Air.
http://www.yihuchess.com/product/3.html
Videos here.
http://www.yihuchess.com/software.html
Regards
Bryan