It doesn't help you, except to stay focussed on the irrelevant. Nothing Harding is doing gives you grounds for comparing him to the charlatan Morris.
I'm not an advocate for Morris, you're missing the point entirely.
Harding sullies his scientific argument by not remaining agnostic. That's not irrelevant, that's a major source of the contention with literal Creationists.
Do you want the Creationists' ears open or closed?
If you want them open, why close them with the gratuitous inclusion of the "irrelevant?"