It is a really nice concept. I had never heard of it. But then as GenX at young age I played with Fishertechnik [0] more than with Lego. Around since 1966 [1].
I first saw fischertechnik at an engineering expo at the local university in the 80s. There was a terminal and you'd enter the type of candy you wanted, and it had a robotic system that got it from the shelving... which was neat. The backside of it had another robotic system that got a piece of candy from a conveyer belt (of many different ones), identified it, and put it in the now empty spot.
I too had construx. I probably used them more than Lego because they were better suited for large structures. It's a shame they don't make them any more.
[0] https://www.fischertechnik.de/en
[1] https://en.wikipedia.org/wiki/Fischertechnik