A drop-in net zero fuel seems a better bet than expecting everyone to scrap their ICE cars and buy electric. I think there’s room for both

If you mean that this a stop-gap technology for existing ICE cars, true. If you mean that there should be room for new ICE cars hitting the roads: No. (Except maybe very specific niche uses for certain types of utility vehicles but not as popular road cars.)

Seb Vettel was at Goodwood this year running a synthetic drop-in fuel

Vettel stated on multiple occasions that he thinks that batteries are thrown away after an EV reached end of life. He completely ignores second life as stationary energy storage and recycling over and over again. He's a cool dude but he's also anything but an expert.