Quite funny but also impressive he build and programmed his own panning and tilting antenna scanning device.
They could use one of these for more precision: Vidpro Motorized Pan & Tilt Gimbal Head
https://www.bhphotovideo.com/c/product/1271009-REG/vidpro_mh_430_professional_motorized_pan.html
For the rest just very interesting to visually see the WiFi.
Curious what the colors mean in relation to signalstrength, that would be helpful.
Also kinda interesting to see that the small router's signal he mentions, is not going straight up.
It's a bit arced, like it is being affected by the stronger signal from the server room.
But that could also be the result of the way the data is being processed.
He should do this stuff on fields with cropcircles on different frequencies, and see if that produces an image.