I don't think it's that strange. My thoughts and my physical sensations are separate, imaging a different body different senses isn't that much of a stretch. I speak English but I don't think in it, thoughts don't have a language.
Secondly, and more importantly, while some thoughts may not have a language (image memories, mental maps), others certainly do, they're narrative. I only speak two languages but well enough (English is my second language) that I can think in both, and often come to a point where I have to decide which it will be for this train of thought.
Shape rotators vs wordcels distinction strikes again, I guess.
We all use very varied modalities of thought! It's as rich as how different we look or how different we cook.
I don't think people who aren't hard of hearing necessarily have particularly deep or clear thoughts simply because they listen to music with their ears either. It's very easy to confuse correlation with causation.
(I've specified "with their ears" because deaf people can perceive music through other means than the cochlea + cochlear nerve.)
Here's a link to a transcript of a lecture with some very interesting examples: https://irl.umsl.edu/oer/13/
A quote as a sample: So let me tell you about some of my favorite examples. I'll start with an example from an Aboriginal community in Australia that I had the chance to work with. These are the Kuuk Thaayorre people. They live in Pormpuraaw at the very west edge of Cape York. What's cool about Kuuk Thaayorre is, in Kuuk Thaayorre, they don't use words like "left" and "right," and instead, everything is in cardinal directions: north, south, east and west. And when I say everything, I really mean everything. You would say something like, "Oh, there's an ant on your southwest leg." Or, "Move your cup to the north-northeast a little bit." In fact, the way that you say "hello" in Kuuk Thaayorre is you say, "Which way are you going?" And the answer should be, "North-northeast in the far distance. How about you?"