Food is so deep, culturally speaking. Many people have deep memories and positive associations with making meat dishes, and "forcing" plant based meats looks like the government intruding on that. It feels overbearing for a government to try and reduce eating of meat through any monetary means, even if it just means reducing / removing subsidies already in place.

It's doubly worse because splitting meat eating through money means the rich can still afford and eat meat in plentiful ways, where the poor won't be able to. This makes meat a wealth signifier (more than it already is), which can backfire pretty spectacularly.

In a policy sense, I actually have no idea how to limit meat eating. Even Carbon Taxes tend to have exceptions for beef.