Ignoring such fools is the best way forward.
Ordinarily I would agree with you, and we particularly don't need threads to discuss every little thing CSW does, or every lie he tells, or every completely nonsense blog post he makes.
However, what we
do need is threads such as this one and the one about his plagiarized PhD thesis. Threads based on unarguable facts, with hard, solid evidence, proving without a shadow of a doubt that CSW is a liar, a fraud, a plagiarizer, an identity thief, and a scammer. People continue to be fooled and scammed by him, and presenting hard evidence like this helps newbies who are unfamiliar with the situation to see the truth behind his lies.
We shouldn't be giving him unnecessary attention, sure, but we should also be exposing him for the fraud he is.