People don't have to pinpoint why they don't dislike it, but that is the kind of thing required to argue much about it or attempt to convince others it's bad.
You’re allowed to say why this does and doesn’t work without going into explicit detail. One of my main gripes is unlikeable characters, it’s very difficult to argue that objectively. Maybe they tick all the boxes in terms of the right amount of humour, loyalty, kindness. But it’s not about ticking boxes in a boardroom akin to how Disney is making their films, it’s the overall effect.