This is awesome, but I'd really hate to be a beta-customer for synthetic beef. It might cause a lot of really bad side-effects while the whole industry matures, figures out what standards it should set and implements them.
Yes, but as a consequentialist, I don't really have any choice but to be for it. Even if trying to change the system so that we didn't test on animals were viable, it would take so long that the delay would surely cause more net animal suffering than just doing the animal testing.