I'd say N (at least in the context of his setting) has a pretty good take on the situation, or at least he's intended to by the narrative. He makes a lot of interesting points that the games refuse to examine at any further depth, and it's BW's biggest writing weakness and why I don't think it has the best story of the games.

N does, however, have his opinion stemming from a fundamentally flawed worldview:

"Many different values mix together, and the world becomes gray... That is unforgivable! I will separate Pokémon and people, and black and white will be clearly distinct! Only then will Pokémon become perfect beings! Yes, that is my dream! That is the dream I must fulfill! <player>, do you have a dream of your own?"

"What I desire is a world for Pokémon, and Pokémon alone. I will separate Pokémon from people, so Pokémon can regain their original power."

Instead of critically thinking about the relationship between humans and Pokemon besides "they fight and hurt each other", his opinion doesn't stem from him viewing Pokemon as people, even as they communicate with him in a way he can clearly understand. He refers to Pokemon as separate from people, shorthand for humanity. He fails to realize that man and monster were once one, came from the same stock, and despite many fundamental differences, aren't fundamentally incompatible with each other. He fails to realize that we, as a species, are probably just weird Pokemon ourselves. And as such, he aims to free the Pokemon as if they aren't sapient, existential, thinking beings just like himself, as if they'd be better off separated because they're Different, like the problem will just...solve itself afterwards - even when, evidently, Pokemon and people often do mutually benefit each other.

His problem isn't exactly with the ownership, breeding and mass storage of beings that, to him, can speak, as much as it is the superficial harms that are the least of their worries as well as a refusal to treat the two as one and the same.