Dude you gotta chill a bit, this is the point he was making. Having a huge argument to get one single change in lifestyle (a huge effort for that person btw) when everyone does a million things in their lives that also contribute to these issues is not pushing the fight forward meaningfully.
And if we are going to drop meat, let's also push people to stop driving, stop flying, stop buying gadgets, stop buying all plastics, stop using air conditioning, and on and on. I can live without plenty of that, just like meat, but which of these do you think you can get enough of a mass of people to give up? It has to be aimed at governmental bodies to make these changes on a meaningful scale.
Gotta watch the capitalization, the difference is that this is the first person named Lady to test positive. Significant turning point in the disease