Some people can only eat meat due to autoimmune issues exacerbated by vegetables. Are we going to sacrifice them?
If you reduce meat production, you'll hike up prices, likely pricing out those with autoimmune diseases that barely survive already. So technically you are true like in "you can still eat meat in theory", but in practice those folks won't be able. Now where is the good faith in that argument?
You're saying a lot of stuff and I'm going to need more evidence to be convinced as to your position. For what reason would meat prices increase if people ate less meat?