I've known quite a few hobbyists who were engineers first. They tended (tend) to gravitate to saltwater. They really went for the gadgets, and the building of systems. You would have a chance to see their fish, and all they'd show you would be the devices they'd bought to support the fish. The biology side of the hobby shot right by them as lacking interest.
I find there are fewer people into that world in the hobby now, probably because their skills are worth a lot more than they were back then. But well designed life support devices for fish are of great value. This set up probably solves a problem I don't have. I don't mind that it looks like an exercise contraption for gerbils, and I have no doubt it can work. Placed on a large tank with modifications for decor, and additional device for flow, et, it's probably a nice little mechanical filter.
If your goal is to put 100 goldfish in a too small tank to sell them all in a day's rush of buyers, it looks ideal. Otherwise, as
@CaptainBarnicles said, it's steampunk, only in cheap plastic colours. If it looked like the works of a rusty, moss infested abandoned mill somewhere, I'd probably want one. But I'd never buy or make one. If the little electronic box at the base had a section that played music loud, it'd have me though.