I don't think anyone (aside from Chantal's lunatic fans) believes that Peetz will find true love, or even a single date. Just because someone doesn't punctuate their post with "btw I don't actually believe this will happen" doesn't mean that they have unrealistic optimism for either of these cows. I'm not defending James, it's just fun to talk about scenarios that could cause meltdowns even though we're already guaranteed meltdowns because Chantal is Chantal. I, too, have expressed in the past that it would be entertaining if James got a girlfriend specifically because Chinny would go on a rampage, streaming after midnight from her car while on the hunt for sugar and grease. And that would just be the tip of the tantrum iceberg. James wouldn't even have to hook up with a cute nerdy girl; it could be a morbidly obese woman twice his age who likes to knit and collect seashells, and Chinny would still be pig mad. Even if he met up with a faded blue hair greasy-faced fat girl to look at Funko Pop figurines for half an hour Chinny would be seething because James is getting attention and she isn't. Misery loves company. Chantal undoubtedly gets peeved when anyone in her comments suggests that James find a nice lady to date, or questions why he's single. Why does no one question how Chantal is still single? Why aren't they telling her to go out there and find a wonderful partner? Fatso gets jealous about everything. She's desperate to convince her audience as a whole that she's desired by hot men, and that she has enough of a social life that she locks eyes with bangable studs on a weekly basis. That alone is comedy gold because the stories of her "many lovers", whether an individual believes them or not, paint her to be a pathetic and desperate degenerate who is barely above a crusty cum sock. Not only that, she's an unforgivable miserable mountain of fat for taking advantage of the mentally ill and substance abusers and laughing about it years later while she chokes down 4 servings of fast food after she wakes up at 3pm. And this unwashed behemoth still believes herself to be leagues above James in the dating department.
TL;DR - Most Kiwis believe that James will find a sexy comic book collecting babe just as much as they believe that Chantal will see a therapist every week, stick to her doctor's diet, and start treating the people and pets in her life with a microscopic scrap of respect.