I'd provide a comment back to your comment here but two of your first sentences fall into the category of ... not providing any direct value to my original comment. In your first comment you disagree with me. Fine. In your second comment, you are asking a question to a question, and then you judge me back. There's nothing I can say about this.
WRT to your third sentence/paragraph, about ..
> If someone comments more generally, philosophically, 'a level up', is that off-topic? If someone comments on one tiny part of the topic, is that off-topic? I suspect one person's off-topic is another's insightful comment.
I agree with you above. It is a subjective matter for sure. But you probably missed my point about this question asked as collective whole. If you look at things individually, then yes, it makes sense what you're saying. But I am asking this question from the collective-whole perspective. It isn't about one or two person. It is about everyone, looking at things from the platform's perspective. I tend to think, all comments (short form or long form) if they are on topic, provide value to the post at hand.