Personally, I think that this an argument that is based on the minutia and too many people are focusing on all the subcultures and ideas beneath it and not focusing on what the movement of veganism is actually trying or rather supposed to achieve. Instead of a movement that would support sustainable use and production of modern consumer goods and services while reducing the need for capitalistic monopolies more interested in profits than producing for what we need its turned into an exclusive evangelicals movement that is bullying its message across rather than trying to achieve organic growth by providing education and a superior product that consumers could switch over too easily.
Since no one was taking the meat eater stance I decided I'd take one for the team and here is my response post - https://steemit.com/toveganornot/@chekohler/toveganornot-my-reponse-beat-my-meat
Let the fun and games begin!
That's funny, because about 90% of the vegans that I know don't ever talk about it, except through the food they are preparing and sharing with people. The "bullying" you are referring to is generally from those who are new to a realization, and we see it with anarchism, atheism, veganism, and every other group where folks have realized they were lied to and tricked for a long time.
This seems to be a balance of self-judgement for what they only recently stopped doing/believing, frustration with people not listening, and often a bit of a superiority complex.