So when you prompt something like "a lady in a red dress" and you get a lady in a red dress... what just happened?
That depends on the system you use.
The text is analyzed for things the system understands and translated into rules to generate a thing. Then it uses a random seed and your configuration and applies the rules to it's model (which is the condensed training data) over several steps. The pixels do not form the finished image directly. It is iterative.
At least the model I toyed around with did it that way. It was a diffusion model you could run on your desktop pc. You could even do things like look at all the typically 40 steps of image generation in a row to actually see how the image evolves or diffuses out of the rules. Too few or too many steps and you would get the visual equivalent of a half dream or gibberish.
And since you mention Warhammer, I actually tried to generate pics of generic orks. Guess what some of those creatures had at their feet... They had bases. Which means a sizeable part of the training data was pictures of ork miniatures, where they could get the information from the picture, that this is an ork. So the model learned that "orks" often had these funny little things on their feet to stand on.
You need training data. And you need a mapping from language to that training data. You need pics of red dresses and a mapping to tell the system that those are dresses that are red. You need pictures of ladies. Even better if you have pictures of ladies in red dresses. Or even better yet, pictures of 1 lady in such a dress. And importantly, a transcription that explains what is seen in the pictures. Chances are, that some of your output pics will look suspicously like Jessica Rabbit.
Oh, and you woud create a hundred of such pics and throw out 95 or more of them. Creation time was a few seconds per pic on my rig. This is not navigation, if every try reaches a different destination. None of the pics looked a like. But most of them would, from a far, meet the prompt requirement. If you squinted.
You roll the dice and iterate roughly towards your prompt several times.
You lost me at your metaphysical there is no spoon claims.