Calling him dangerously insane because he argues for synthetic beef isn't a great starter. Producing beef is incredibly wasteful, not to mention you have to butcher an animal.
I'm a proud carnivore, yet I would gladly switch to synthetic meat when it is similar in taste and cost. There's simply no reason not to.
After what I have read on the subject so far, it seams that synthetic meat lacks a lot of the nutrients that natural meat has.
Cows and what not, eat natural food and get all the nutrients in that food, synthetic food is just cells grown in a dish (or similar) with only the basics for cell survival.
I wish it would be as good as real meat, it would help stop the maltreatment of animals that takes place in many countries.
Until then I will just have to try to chose meat from good farms.