> My fantasy solution is everyone needs to go get a meat consumption license by going to a farm and killing an animal with a knife in their hands every, say, 10 years

That's not a solution.

My grandmother's generation (, Chinese) has extensive experience with slaughtering animals. That generation still likes and craves meat.

You might have people who chicken out in the short term, but in a couple of years getting a butcher license will become normalized and you're back at square 1.