Clearly not, as, humans being as humans are, merelly getting people to just start having vegetarian meals once in a while, reducing meat consumption (which is even a good thing healthwise) and eating more of the less environmentally harmful meats and less of the worst ones, is a far faster path to reduce the Environmental problem and avoiding the kind of push-back reaction that will put many people altogether against the idea.

The genuine, pragmatic approach to maximizing the Environmental outcomes both on the long- and short-term is the very opposite of how Moralists, driven by their own Moral standpoint and self-righteousness, are abusing broader Environmental concerns to push their morals.

People putting Environmentalism first aren't pushing for absolutist "abide by my Morals" pseudo-"solutions".

Then keep beef. One cow is a hundred meals, one chicken is two. 50 chickens die to save one cow.