

I have aphantasia so I can’t visualize much of anything. But I did understand the passage.
I read a lot of fictionalized historical diaries as a kid (i.e., diary entries written from the POV of a fictional character living during important historical events) because they were given to me as gifts and the writing style is somewhat similar, though not as creative with imagery as Dickens.
I sort of just try to contextualize the words and their meaning and draw upon my experiences to fill in the blanks. I still have other senses and my own mental concept of things and how they fit together. I can imagine “faces scowling” or a muddy street and how that affects the story and its setting, just not visually.
I will often infer the emotions of a scene and place myself within that context, since I usually am drawn to more character-driven experiences. I know what a room will look like based on the description, I just can’t hold an image of it in my mind.
I should also note that there are levels of aphantasia and everyone is different. I kind of have a little bit of visualization, but not much. Like limbs moving, some motions, etc. kind of like stick figures that can barely move. It doesn’t allow me to “see” things with any detail, and if I were to try to visualize (for example) a golfer taking a swing, the swing gets to the ball and then stops. There’s no physics applied to it.
I actually joined a psychological study in undergrad, because it was mandatory to do some, that was about visualizing and that’s how I discovered that I have aphantasia. They asked me to visualize and describe certain things and I was like, “I can’t” for basically every question. The researcher’s face was sort of priceless, lol.