We are way past this point. This huge population of cats exists solely because we are breeding cats. Besides that, we are killing lots of other, apparently lesser animals, in order to feed them to our cats. What do you call this, if not playing god?
I don't know of any "cat breeders". They are just a resilient species.
I suppose we could make some sort of "equity" system for species based on an arbitrary metric, but that's closer to playing God.
Birds can fly, not really fair to the feline species concerning which places it's allowed, eh?
Zero cats should be allowed to exist in NA?
No open borders for cats!?
Zero non neutered cat should be allowed to exist in North America, correct.
Same applies to humans of non-native descent, I presume?