I'm more concerned about which direction that light is coming from.

Best not to think about it.

Wasn’t it supposed to be on the dark side of the moon?

The meme says it is.

The moon's dark side is not actually dark though. The moon is always facing earth from the same side. The dark side of three moon refers to the side that's not visible from earth, not a side that's always dark.

Heywood Floyd? Shouldn't it be rectangular and black?

That's the far side of the moon, not the dark side. The dark side is the side that isn't facing the sun, and that's changing constantly.

Only if you take it literally. Oftentimes people call the far side the dark side (dark as in unseen).

Although the far side does get a lot darker than the near side during lunar nights, since Earthshine never reaches it.

This and the prism is how rainbows are created on earth

It's ancient leprechaun technology

Yeah, but we can clearly see Earth from that spot, so it can't be the dark/far side

We aren't at that spot, but in space above and behind it. Our horizon is different to the horizon at the prism, and on the surface there the Earth may well be slightly below the local horizon. Hard to say for certain since this is AI slop and the perspective may be wonky.

That being said, the prism is so tall that it would probably still be at least slightly visible from the Earth.

I would go on on what the Sun's direction tells us about the location, but I think it is too unrealistic to even attempt to deduce something from it

It's clearly some distance above the moon, judging by the curvature, so it might be capturing both the dark side and the earth.