IIRC, they equate animal domestication to slavery. Or at least indentured servitude.
Because those cats have it so fucking hard, what with all the sleeping they have to do, and the cat condo and free food. Seriously, if there's any pet whose life is the opposite of indentured servitude, it's a cat.
Once again I can see where they are coming from. There is something about freedom even if your lack of it is really comfortable. It's not an uncommon sentiment to object to animals being kept it zoos if they could have survived in the wild, even if less easily. I've kept cats and dogs and would agree that it's more complex, but it could be argued we've bred them into dependants. If you believe animals deserve equal rights to humans then breeding species of animals for work, company, and food would be a bit dodgy.
I can see where their problem with Pokemon comes from. If you agree that dog fighting and similar is wrong then pokemon fighting is not much different. If you assume media normalises behaviours then Pokemon is normalising animal abuse.
So they think Pokemon is a gateway to dogfighting/cockfighting/etc?
That's a rather extreme slippery slope argument, but one I could at least debate. But then WTF is with the McNugget weirdness and having a blood-drenched evil clown boss fight?
I was posting about their stance in general with the games being about overthrowing evil pokemon masters (right?). This time it seems like they are annoyed that a popular franchise they already dislike is being used to advertise something else they don't like. Axis of evil I guess. I'm not sure they mean gateway as they believe the abuse is already happening. It's not dissimilar to the sexist media normalising sexism argument.