On the one hand why would this clock be tolerated if it was fraudulent — that is to say, not entirely mechanical?
On the other hand, if the work is as much artistic as it is technical, then the creator must be applauded. Why not troll the unbelievers by making the most striking component of your ‘mechanical’ clock — the part that tells the time — be utterly and obviously not at all mechanical.
There is a hint in the design that the concentric faces are some sort of circular vernier scale, but the way it is presented makes it seem like the creator very much wanted to give the impression that this is driven by blue electric lights. The aperiodic behaviour of the pendulum and grasshopper escapement seem a lot more interesting, but that mechanism is hidden from view.
This is the level of hubris one must expect from someone with large amounts of money... “clock-you money”? Not that we’re picking teams but I’m more of a Long Now fan, myself.