I think when going this route it helps to view it with an analogy as it makes it more intuitive to understand why I don’t find this an appealing view.
If I were to to adopt this view point, this would mean I would be also ok with breeding humans for any given purpose (let’s say Slavery as it’s an easy one) as I could justify it saying: “It’s better for them as they would have never existed otherwise”. However I think intuitively most people would agree that would still not make it ok and that’s why I would not consider it ok for animals. Because fundamentally we’re still violating - I think - fundamental rights. (e.g. most negative rights like right not to be killed)
P.S.: I have a rights based approach on how we should interact with animals and not a weéfarost one as I think it leads to these kinds of issues where you end up justifying terrible things.