Why Something Rather Than Nothing?

[Heywood]

Heywood, someone being utterly intellectually dishonest and beign called out for it is not an ad hominem. The fact that he's so dishonest and uninterested in actual debate is a relevant factor to how we should regard his claims.

So if William Lane Craig makes the claim that the earth is not flat....but round....you should reject the claim because William Lane Craig made it?

Your error is conflating Craig with the claim......that's why it is a fallacy.