I agree with you. However, whether a piece of writing is judged as quality or not depends on its content. If it is long but meaningful then that is also good. However, if the writing is related to technical matters, it might be better to just answer as necessary so as not to confuse things. However, when discussing opinions, it is necessary to explain and give examples so that the argument seems longer
That's what I meant. It's not about how long or short but what about what you are going to express. I also mentioned about if someone is discussing something then it's better if it's direct to the point instead of going around that will confuse someone. Most will just the quality about your posts or article for example is if it's not off-topic or a little bit off-topic or on topic because if it's on to the point then many will consider it high quality regardless of the content.