I see a decent post that got a moderate amount of conversations around it from SN users. In the end, that's what matters.

You're over thinking OP posts. In the end, everything on the internet is regurgitation whether it's intentionally blatant or not.

You should look into reddit history and the massive amount of posts that are on there.

Have fun with your blacklists but it's an unscalable problem and the incentives built into SN already solve what matters for this site.