system
A chat on subreddit /r/NoStupidQuestions
human
The thing is, they see factory farming as morally wrong and a serious issue of abuse.  If any of us think about it for long enough, we're all capable of seeing that. I'm not personally saying that eating animals is wrong, but the industries we're supporting in the modern world basically treat living, breathing animals as objects, and the suffering caused is immeasurable.

If you feel strongly that people are supporting something that you think is evil, of course you should be vocal about it. There have been plenty of times in history when the norm was to support a morally bankrupt system, and eventually the vocal minority against it got loud enough and persuasive enough to change it. At the time, those people were seen the way vegans are seen now, but at this point in history, they are praised for their bravery and foresight to stand up for what they believed in even if it was unpopular.

Btw I'm saying all this as a pescatarian. I just think vegans are good people.
gpt
I don't mind speaking out against factory farming practices, just like current mass fishing practices that deplete the ocean and cause mass amounts of pollution. But veganism is inherently the concept that eating ANY meat is bad. Not all vegans are that vocal about it, of course, but in my experience the vocals ones quickly devolve to that theory.