That's a more debatable thing. You'd have a necessity to not change, which makes it less immoral obviously, but it does put into perspective the question of the worth of a life, and whether a human life is worth a lifetime of meat eating/killing.

But that's not the case for a huge majority of people, so I would call this an edge case which is less obvious. Not everything is obviously good or bad, some areas are grey, but it doesn't mean that some areas aren't. Eating meat for personal pleasure/comfort is obviously immoral, once everyone aligns behind this we can start debating the edge cases.

Also, people like you would typically be a good reason to keep on developing cellular meat, independently from vegetal alternatives to meat.