By arguing against “meat” you’re ensuring that even more animals will be harmed. Including more human animals. This is what you should be arguing instead:
Furthermore, please read this to understand why “in vitro meat” is not a boon to animals, nonhuman or human:
The term “meat” is really a euphemism, created by our speciesist society, that’s meant to divert attention from the real issue, which is that we’re talking about the flesh of an innocent being who could feel pain, fear and other sensations, just as much as humans can. A being who had an interest in their own survival and freedoms just as much as humans do. The reality is that it’s impossible to obtain the flesh of those beings without inflicting unnecessary suffering and death on them. Every nonhuman whose flesh we consume was immorally slaughtered using violence, and it was completely unnecessary.
Using nonhuman animals for their flesh is also morally not distinguishable from using any sentient being merely as a replaceable resource for any other human purpose either. All forms of exploitation of any animal, nonhuman or human, are equally morally unacceptable. Furthermore, to distinguish between different kinds of exploitation ensures that the people observing our arguments will inflict even more unnecessary suffering and death on nonhumans (and humans) than before.