I agree! Quality content is a whale on steemit. But what is a quality content? A quality post is an article that bring solution to a certain problem, or answering a question, or entertaining the reader, or a research that is based on factual truth, and so on. Ideas are out there waiting to be uncover.

Does it enough to be called quality content? Yes, but for it to become so called quality content, it should be 100% unique and covering at-least 300 words.

You can use some online tools such as http://smallseotools.com/plagiarism-checker/ to check if your content is unique.