In a way, the added clarity actually undermines one of the core questions Umineko asks its readers. “What does understanding mean in the first place?”
No matter how much or what type of information you have, there is no single absolute interpretation of that information, which is to say that there is no truth which can “bind” human beings for all time.
Whether you’re talking about Shakespeare or some kind of religious book, people are continuously reinterpreting them to be in line with and support their other beliefs, or in accordance with some new, allegedly scientific method.
Umineko tries to confront you with the philosophical problems that arise when you acknowledge that no matter where you stand, you can’t claim certainty or call any position truly objective in good faith. Even if there were such a thing as red truth, any piece of information can be re-contextualized to mean something different from what you believe it to mean. With the right definition of “person” and “death” any impossible-seeming murder can be orchestrated.
Still, there’s a reason why we distinguish between objective and subjective, right? There’s a difference between strong and weak reasoning and outright fallacies, right? Those are the kinds of questions you’re meant to find your own answers to.
The manga on the other hand relieves you of having to think by straight-up giving you a satisfactory explanation to all of your most pressing questions. All that’s asked of you is to believe what you’re being shown, and all of your doubts will be blown away.
People feel like they understand Umineko better after reading the Manga because it’s simple, when the VN went to such lengths to show that real understanding is never easy.