I wonder how well these work compared to the real thing? A 150W light bulb shining through holes in a rotating piece of wood produce beams flashing over the eyes. This exact method to produce the effect is difficult (impossible?) to replicate with a PC monitor (unless you're a hacker in a movie).
Of course the effect might still work; but while I'm curious about it, I'm not in the mood to try this now. So judging/dismissing these implementations now would be unfair.
I don't think it's that important, the rotating slots and constant light were appropriate ways to get the necessary switching speed with incandescents.
The experience that was in London recently used banks of led spotlights, not even dedicated strobes.
Of course the effect might still work; but while I'm curious about it, I'm not in the mood to try this now. So judging/dismissing these implementations now would be unfair.