Those squeamish about anything that smacks of geoengineering-in other words, technology intended to change the world's climate in ways that oppose global warming-view artificial upwelling with scepticism.
For medicine, this may in part be due to people being squeamish about their own and other's fecal matter, and insurance companies being squeamish about covering the cost of the procedure.
Afterward, the masses will convene at Bar before boarding a train that resembles getting on a metro in China, or any other situation which can turn the least squeamish person claustrophobic.
He's also trying to persuade the squeamish – people easily upset by something unpleasant - to overcome their fears of crickets, worms, and spiders, and instead see them as a tasty, alternative source of protein.