The point isn't necessarily to change their opinion because you're right, ultimately they'll often contort their argument into any way they can. It's more to s

The point isn't necessarily to change their opinion because you're right, ultimately they'll often contort their argument into any way they can. It's more to show others that they're incorrect for XYZ reasons and to prevent that detritus from accumulating. Over time if you just let them post without counters or some form of moderation eventually it becomes the norm.