this is probably the best form of user interaction with simulated fluid I have seen
This one looks like a shallow water simulation, rather than a fluid simulation in the sense of handling pressure etc. Rendering is gorgeous though!
I think it’s way off. It looks surface waves propagate without dispersion — tap it and watch the caustics. Real water haves have the packet of waves and the individual peaks and valleys moving at dramatically different speeds.
I was going to reply this is at least 10 years old and it was already butter smooth the first time I interacted with it (with even older hardware, from when webgl was still a novelty and not widely supported across browsers)