There are however a few vegan activists who oppose lab-grown meat (and things like the Awesome Burger) on the grounds that we will never truly love our animal brothers and sisters and treat them justly, until we have lost the very appetite for meat.
Framing the argument strictly in terms of consumption without inspecting the conditions of production also betrays a wider perspective on how we can achieve ethical or sustainable practices. And certainly it's inimical to the reality that there needs to be reform at the institutional and corporate tier of practice with higher priority rather than castigate individual and cultural consumption.
In this case: meat is enjoyable, but eating it is unethical, so I will make the sacrifice not to eat it. If it becomes possible to eat meat while still being ethical, then I still won’t because it marks me as someone who is willing to make a sacrifice to be ethical.