Synthetic fuels will be nothing but greenwashing for the next 20 years: there is massive demand for industrial hydrogen (most fundamentally for synthetic fertilizers), and as long as that demand is not met with hydrogen from renewable sources, it will be supplied (as today) from from methane-steam reforming -- using the exact fossil hydrocarbons that synthetic fuels would replace.

But yes, synthetic fuels would allow people with money to go to Davos and run their yachts while claiming total greenery, so I have a feeling we will end up with green synthetic fuel and black synthetic fertilizers even if causes larger net emissions.