When looking at an isolated aspect of the argument you’re missing the whole complex. You can certainly produce hydrogen from solar photovoltaics (albeit expensively, some 6 EUR/kg rather than 1 EUR/kg) and use the existing natural gas infrastructure for storage and distribution. Hydrogen can run furnaces. But this isn’t at all what the author is arguing.
When looking at an isolated aspect of the argument you’re missing the whole complex. You can certainly produce hydrogen from solar photovoltaics (albeit expensively, some 6 EUR/kg rather than 1 EUR/kg) and use the existing natural gas infrastructure for storage and distribution. Hydrogen can run furnaces. But this isn’t at all what the author is arguing.