I understand why you (and others like you) express this sentiment, but I think you're putting the cart before the horse.

This comment doesn't expand the conversation, it just expresses an opinion and doesn't attempt to engage the original poster. In scolding delsarto for creating a post with (I assume) limited on-topic discussion & engagement potential, you've created another post with limited on-topic discussion & engagement potential.

We already have some language in the guidelines on how to engage in discussion, but maybe something specific to "what about posts you don't think add to the discussion"? OTOH, Communities that try to enforce rules too stringently end up being communities about those rules.

And I love my cats, but I hope you'll agree that cat photos are not germane. I have many interests outside the scope of this site, and I'm sure you do too. That doesn't mean we should try and drag this site toward the lowest common denominator. Different sites should be different. More homogeneity is not what the Internet needs.