So, meat rations? Of course there will be a black market trade in them, so you are back to rationing by price again, with the slight advantage that everyone gets a "universal meat income".

I think it's impossible, and undesirable, to ration a commodity that people want, by dictat, perhaps even when there are strong negative health and social impacts, as with alcohol, tobacco, drugs, etc.

The route has to be by some form of economic penalty/redistribution, ie taxation (which people will accept to some degree), and/or through education, persuasion, cultural shift, etc.

In the end I think the only answer is technological progress.

If there is artificial meat, with sufficient small footprint, the debate is mute.

The commies used to do that in Eastern Europe and Soviet Union with meat being rationalized. They were exporting it to Western countries at dumping prices to obtain hard currency. It was quite unpopular. If you want a swift regime change, then go ahead and tax food or rationalize it.