It really depends on what scaling algorithms you use.
Some people can make paintings that look an awful lot like a photograph, that is, they have a mental model of what scenes look like and can construct an image from that model.
Computers can create photorealistic images using raytracing techniques and also with neural networks
It's very possible a scaling algorithm could guess at what is missing in the picture and fill something in. That doesn't mean that is going on with Apple products in 2021.
Some people can make paintings that look an awful lot like a photograph, that is, they have a mental model of what scenes look like and can construct an image from that model.
Computers can create photorealistic images using raytracing techniques and also with neural networks
https://deepai.org/machine-learning-model/text2img
It's very possible a scaling algorithm could guess at what is missing in the picture and fill something in. That doesn't mean that is going on with Apple products in 2021.