There's no way we can't genetically engineer a solution to this problem. Maybe not today, but certainly in the near future. I'm surprised he seems so pessimistic.
We did genetically engineer a solution to this problem, the program was called "selective breeding" and it was first practiced by the group called "early pastoralists" who published their findings in the journal "ancient history"
How are you proposing to create individually tailored meat products when they are concerned that the process doesn’t scale in the mass-produced first place? Personal bio-reactors?