Profiting off the suffering of others isn’t acceptable behavior. Establishments that do so should be boycotted where possible and practicable. I think protest is a justified response.

Abuse. Torture. Murder.

Vegan extremists throw those words around like they are universal facts of animal farming. They are in large concentrated animal feeding operations (CAFOs) which is what the things that you might refer to as, "factory farms" are actually called. Small family farms, homesteads, and crofts treat their animals far better than CAFOs do. Animals aren't abused or tortured on most family farms. When you use ridiculous inflammatory language like that most people stop listening to anything else you have to say.

Given two scenarios where I’m potentially wrong, the one where I’m mistaken and vegan is the one with a substantially more ethical outcome than the one where I’m mistaken and not vegan.

The issue isn't you being vegan. Take the back of your hand off your forehead and calm down. I don't care what you eat. If you want to eat vegan eat vegan. The problem is that the extremists start throwing around words like carnist, corpse muncher, blood mouth, cadaver, murder, etc. and no one takes them seriously anymore. I do the same thing when the extreme right uses the word, "woke" or the trans extremists use the word, "terf". It immediately causes me to stop caring about anything else they have to say.