My understanding is that at least for the Shuttle, much of the initial visible smoke is actually steam from the water sound suppression system. Not sure about after liftoff however, I think others are far more qualified to explain that.
They’re not going to release something unless they think it will sell well to a broad range of consumers and make them money. And then they’ll continuously refine the products they do sell to make them better and better. They don’t design products for niche markets or a small subset of geeks. And they don’t release things just because they can.