Huh? Not having to form your thoughts into words is a completely separate thing. That has to do with the strength of your internal narrative, doesn't it?

I don't have much of an internal narrative. It's there when I need it, but when I'm doing something intense, I think in thoughts. Not images, not words--all distracting clutter. Just plain thoughts, unless it's thoughts about words or about how something looks.

The downside is that translation into words is always an extra step. Whether or not I'm visualizing anything. I had the concept of what I wanted to type here before I actually typed it; then I had to figure out how to encode it into English.

I strongly suspect that what I'm doing is, in fact, a lot more like what everyone is doing, but in most people, different parts of the brain work in closer harmony so the distinctions become less consciously apparent: when your internal narrative is on hard, you always have that linguistic stream to attend to and so it appears as though it is the thinking rather than that it is associated with the thinking (and may, of course, feed back into it; so yes, it's part of the thinking process, but not the whole thing).

Anyway, long story short: maybe the lack of automatic visualization gives you space to have an uninterrupted internal narrative that you can just transcribe into text--but I don't know, maybe some people have both? However, the lack of visualization does not necessitate that you have that narrative, because I can quite confidently state that I have neither much of the time. Just thoughts.