If it were down to wagging a finger, yeah, that's for the birds. The only thing that serves is feeding the clickbait money machine inflaming a culture war. We already know that if some alternatives are on the market (electric vehicles, plant-based boxed crap), people will buy them. A large percentage of consumers buys plant-based products despite not being vegan or caring to be.
In the food department, legumes and whole grains are not "luxury" items, but can serve as a substitute for meat. Even omnivores (I am one) who are health-conscious tend now to make a point to include more of these in their diet, and they're cheap.
Bearing in mind that these interventions are meant for short-run downward pressure on emissions (in the West), and short-run interventions are what we need. There is low-hanging fruit still, which can be exploited without dampening quality of life and without "mandates". In the long-run it's all a moot point, between nuclear/fusion and renewables. There is also a ton of public/private investment into carbon capture, renewables, the works - but that is not moving quickly, even though this would be the most valuable.