They are a transition, to be sure, but especially for consumers who do 80% short trip and need the ability to do long trip, it would seem to ideal choice for the 2020s.
BP, for one, has been making noises about their fuel being carbon neutral. It's not impossible, e.g. you sell fuel that makes so many tons of CO2, you bury in a hole so many tons of vegetable matter that captured that much CO2.
Doesn't fly in practice, perhaps because of public perception. Net-zero on synthetic fuels is more obvious, although not necessarily less expensive.
Maybe in 5 years it will be different. Maybe the Chevy equinox will stay in stock and stay around 30k. But I'd bet a lot of money we will have gas stations for another 40 years no matter what we do, barring global collapse.