I'm a major YouTube fan, perhaps watch 2..3 hours each day. It pushes ideas based on what it knows are my interests. Sometimes it gets things a little wrong like this..
But I must say I was intrigued by this anyway. The product he's showing is
Someone else will know if €299 is a "good price" but it looks like a lot of fun. (obviously reminds me a lot of modular synthesizers, CV voltages etc)
Also reminds me of an ETI project I got all the bits for but never built about 40 years ago which was an analog computer based "moon lander" game.