There isn't one.

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> Is it a scam?

It won't work.

I do not have the ability to tell if it's a scam. They might really believe it. A scam would require them to know they were wrong.

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> Are they bringing anything new to the table?

No.

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> Their timeline is pretty tight with first rig in 2 years and commercial level first power plant in another 2.

You can't even build a bog standard coal plant that fast.

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> They should have demonstrated at least a couple of holes deeper than a few km by now you'd assume.

If you believed in them, yes, I'd agree.