If someone wants to live meatless as a sacrifice to God I think it's healthy. If they want to do it to promote some godless leftist idealogy, while pretending to do it in the name of Catholicism, I think it's profane.
Well, the headline is dishonest at a minimum. What "some Catholics believe" may or may not have anything to do with the Catholic faith. Dietary preferences have nothing to do with the faith, that's a personal matter.
It's interesting that the headline does not refer to the beliefs of "some Unitarians" or "all Buddhists".