Not convinced that 600 words makes something high quality. This kind of post gets a bit repetetive so most people will skip through them to find any interesting or salient points. The longer it is the less likely I am to read it. Most of them say the same thing and the bulk of the content is usually AI rehashes of previous posts.
Time is a luxury not to be wasted. As long as a post gets to say what it has to say well then that's the ideal for me. Quality is a fresh take on a tired topic or something that generally stands out - ie. something that cannot be AI-ed.
An example is a post I just made - Very short and to the point but it was a standout battle as I beat a newb farmer who had a level 10 archon and maxed out cards with a level 2 frontier archon and garbage. How? Basic skill and luck. Posted after cut-off time btw.