Also curious if there's a vegan pizza effect. Figure on pizza basically being a large slab of carbs + toppings. Decent dough needs some form of fat, and if butter or lard is out, some other oil may be substituted, plus any that may be added to toppings. Then zip through a hot pizza oven that probably alters the structure due to the heat. But generally something that'd be tricky to make 'healthy'.
There does seem to be an upsurge in vegan promotion. Some seems to be based on the idea that going vegan will save the planet because cows fart, and vegans don't. Lobbying groups have been floating the idea of making a meat sin tax. Those seem to have come back into fashion since flogging papal indulgences got stopped. It's not a sustainable proposal though given the amount of land that would be needed for everyone to go vegan, especially if processing, transportation and waste gets included.