My mention of ethanol is actually more valid than your mention of methanol, because
on the amount of ethanol recoverable from the US's non-food biomass. (For those who are losing track of this debate: the amount isn't anywhere near enough to replace the US's consumption of gasoline sustainably, and doesn't even begin to address the country's vast consumption of the other fossil fuels.)
In contrast, you drew methanol from thin air and then used it in BS calculations.
And my reply is that you failed to demonstrate the existence of a scalable source of renewable carbon. As far as I know, no one has independently verified your claim of 100 billion tons of carbon available each year. The article I cited, by the Union of Concerned Scientists, indirectly contradicts your claim.
Thus your entire case fails. Producing hydrogen is vastly better than using biomass, if we want renewability.
And consider China's point of view. Should the country bet its future on an unverified (and probably unverifiable) claim of a hundred billion tons of carbon in a single paper? Or should the country plan on using obviously abundant resources, like solar power and seawater?