People consider vegans on Lemmy as too preachy. Even in vegan communities here, mods have to remove soooo many inappropriate comments (I read a few of these and they keep getting removed for good reasons). Comments that suggest going vegan on posts about animal abuse are downvoted.
At the same time, whenever there is something about Windows or Chromium based browsers, people here are doing exactly the same. “Just use Linux/Firefox/whatever”.
Often times it’s no different than someone preaching about religion. “You’re going to burn in hell if you don’t accept Jesus into your heart!” isn’t too much different than “you’re a murderer if you eat meat!”
It just comes across as self-righteous posturing.