How can you tell if it’s quality post or not when you have not exposed yourself in the forum for long? I believe e everyone of us here has its own concept and perspective in each thread in the forum, and what we say or post depends on how knowledgeable we are, and not on the rank or position. However, there’s always an edge if you have higher rank or position since you are more exposed to how the market works and mastery is there. Thus, making high quality post is more possible than to expect for some newbies to do it.
Maybe OP saw some posts that weren't making sense in the discussion, or were off-topic. It's pretty much the forum reality where high ranked accounts posts in mega threads because they need that 1 or 2 posts to make their campaign quota for that week.
If you want to find something in a large group like this one, you will eventually find it.
Choose what you want, a spammer, a plagiarizer, a high ranked newbie, low ranked professional, someone who is 16 years old, someone who is 60. I don't see anything worth complaining about.