Honestly, I think it's for funsies. Kinda like picking a fuuny acronym.

It increasingly often feels to me like the creator/programmer/whatever of this simulation (or whatever it is) is feeding us novel prompts to see how we will react. :)

That's a completely mental way of interperting this post and this world. I meant the physicist are doing it for funsies not the Lord almighty.

At face value your chain of logic isn't coherent, how can creator be sure he isn't just a creation? And you get to absurdities it's creators all the way down.

When you say "you", are you speaking literally or colloquially?

If literally, you have some science to contend with! :)

It's a visualization of the wave function, not an image of entangled photons, so it's meant to convey what the images represent in a form that's human "readable". (Think data visualizations)

If quantum particles are the probability function, then the image shows the photons themselves.

It feels so natural because yin and yang are not two separate things but two sides of the same thing, just like two entangled particles are.

Its worth emphasising that entanglement is not a two-party / duality specific thing.

You can entangle 2 particles, you can entangle 3 particles, you can entangle n particles (although actually doing so becomes a quite hard engineering problem as n grows), you can even entangle different properties of the same particle with each other so the spin and position of an electron can become entangled.

Human brains love dual/pairwise properties for some reason, but they don't seem to actually come up in physics very often.