I don’t think they’re any more flawed, at least not significantly. While some flaws are certainly objective, others are very subjective.
Actually only a very few flaws are objective (i.e., measurable and quantifiable) and most of them are irrelevant, such as for example: incorrect grammar (where you can quantify to a grammar rules) or some object in the scene that was not intended to be there (the film makers admit they did not want it there).
All other “flaws” that people actually care about are purely subjective opinions and not flaws per se. For example, if one says that the dialogue is bad, the is purely subjective because there is no objective measure to quantify dialogue quality. Except for maybe grammar mistakes and how well it follows written script; none of which is usually referred to when they say that the dialogue is bad.
So when people say that a film is flawed, they are just trying to make their subjective opinion sound more than what it actually is; a subjective opinion.