The meat industry contributes to a significant amount of global carbon emissions (11-17% of global carbon emissions according to a few sources). The meat industry has been the primary reason for the Amazon rainforest’s deforestation. Industrial cow, pig, and fish farms are quite destructive/poisonous in whatever environment they’re in. The large amount of antibiotic misuse in meat farms is leading to super resistant bacteria. In multiple studies, a healthy vegan diet is has been shown to be better in multiple health metrics when compared to a healthy omnivore diet. And, finally, the meat industry is typically terrible for the life of animals involved, especially the large meat farms.
Overall, prolifers typically supporting the political parties that typically support the meat industry does suggest hypocrisy. I imagine that’s what the original commenter was suggesting.