Improving your content to optimise for SEO is not the same as improving it for the user. I hope that fact was made bloody obvious by SEO-hugging websites full of garbage occupying top spot of many google searches.
In fact i might google a spesific product, like a Monitor, and the top result will be "but Monitor XYZ on Amazon". When i click on the link, turns out they don't actually sell or stock that product at all!