2. Does this bother anyone? If Knight's topic were just one page long and then disappeared, no one would even notice. Would that be better?

It would be better if it were just one page, but at least it should be pleasant to read! Don't worry, it would fill up over time. But, in fact, there's no one to really respond there. Those whom Knight wanted to see there either don't visit this section at all or have already left the forum because of such nonsensical posts and the abundance of off-topic chatter. And believe me, it would be much better without those silly comments! By the way, for your information: quality is usually better than quantity.

3. We are not "spamming"; most of our posts contain a piece of the overall picture, expressing some thought, or are a separate, well-chosen fragment. We don't post one-smiley posts.

As a rule, a topic is created to discuss something specific. And when it suddenly veers off in a completely different direction, that's already spam! It could be understood if the topic gradually transitioned into a discussion of something else... but GRADUALLY! Then it would be normal. But when posts suddenly jump to discussing completely different things (and in this case, they contain complete nonsense), then it's pure, stupid spam, showing disrespect to both the topic creator and other people who are participating in the discussion.
Do you need specific examples? Please!

a hairy head cleverly climbs onto the cheek

Please explain what this post has to do with Knight's topic? Or is there some important meaning in this post? And we just don't understand it? Or is this a separate, well-chosen fragment? Perhaps it's a piece of the overall picture, expressing some thought... Hmm... It's really a stunning post in its depth and meaning! It truly reflects the overall picture! The picture of the dominance of this kind of spam on the forum...
By the way, this post was written three times in a row, if I'm not mistaken. And this probably also has some hidden meaning!
Do you need more examples, or is this enough?

4. eee... why are those who practically never visit this section so upset?

In this case, I started it. I want to remind you that I am a coordinator, and my job, among other things, includes monitoring order on the forum. And so, I decided to check what was happening in this lovely section. I checked... I didn't have to look far. In general, I think this section can be called the "Haven of Depravity" in one word... unfortunately. When I first came to the forum, I probably, like all newcomers, started by posting in the Chat and Lounge Forum (as it was called then). And you know, the topics were much more lively, better, and more interesting! Now... I don't even want to go in. It's sickening to look at this semblance of topics and communication. And what seemed like spam to us back then doesn't even come close to the spam I see now.
I'm starting to doubt that you even remember what forum you're on. You were given a sandbox to play and have fun in, but you turned it into a pit filled with some kind of garbage...
The question arises: is this sandbox even needed? Perhaps it would be easier not to clear up all this garbage, but to simply fill the pit with earth and put a cross on it?