Look at all those people in that thread going "I dont know if animals have the same emotions or just similar ones" or "we can't prove that plants dont feel pain too!" and then splitting hairs in the most asinine pseudophilisophical debates, just so they dont have to engage with the core of the issue, that what they're doing is fucked up.
They know it, deep down, as did I before I went vegan, but it's eye-opening to see it "from the other side".