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