As the devils advocate I've taken this down range with a few vegans too... To those I've spoken to it comes down to morality, cause at the end of the day if the muscle is artificially grown and never been in contact with a functioning brain .. you can eat that and still be vegan. They claim .
That is vegetarians and not vegans though. An egg has not come in contact with a brain, yet they wont eat it. Same thing with milk.