There are a few replies to the original Greggs announcement post.
I don’t know about ‘angry’ though. Most of the replies I saw were of the tiresome, “What I don’t get is why vegans want to eat something that looks like a meat product anyway?!” like they thought they were Jimmy Carr, or else, yeah, people saying “But it’s not a sausage cry laugh emoji”. Basically the usual crowd who pop up every time someone mentions veganism in order to make it clear they’re not vegan.