I agree with this. I think that the way we teach math is a disservice to the kids. When you watch a talented mathematician's lecture you always see how relatable and intrinsically motivating it is.

On the flip side, I think that when people write about math in scientific reports for example, they don't explain the math they use either.

Teaching by key-value pair (which is what far too many people default to) is a horrible way to teach

Concepts may need to be presented propositionally, but there [almost] always needs to be a "why" (even if the "why" isn't yet understood) paired with the "what" - the Pythagorean Theorem isn't just about memorizing 3-4-5 right triangles, it's about figuring out the shortest distance between two points, knowing how much fencing you need around your property, and on and on