This isn't an unpopular opinion. In fact, it's an extremely popular one. Every corner of the internet goes out of their way to say they hate vegans, This isn't even remotely original.
I'm not interested in changing your mind. You do as you like, and frankly it seems like you are just venting, so rock on. But if you are intersted in fact based discussions, I think you need to move past your the stereotypes, assumptions and flat out falsehoods.
Human suffering is not preferable to animal suffering.
No vegan thinks it is. I would kill an animal to save a human.
They force their shit into pets like cats who can't thrive on a vegan diet
Snuggling my non-vegan cat right now.
steal your pet from you so they can kill it
Crazy people of every community exist. Without question the overwhelming majority of vegans do not support the behavior of a few that have done this. That is exactly as fair as me saying carnists practice cannibalism because of the handful of psychopaths to do so.
And the rest of your points fall under the "no ethical consumption under capitalism" good place type arguments. However, I find it particularly egregious to say vegans don't mind slavery. If a human slave in involved in a plant based food, then it isn't vegan.