I only disagree with liars and idiots. Though in your case I am unsure which applies.
It is not 'largely'. It is overwhelmingly. We do know that. Down to exact measurements. I already explained how we know. Either present scientific evidence disproving the USGS or concede. But clinging to an argument after I utterly debunked it with science is either extreme stupidity or blatant dishonesty. Neither will impress me. Repeating a lie does not make it true.