The problem with your fantasy is that it is confirmed as false by klaus.
Yes, there could have been a story written where klaus innocently shares this with his father.
But this is not this story.
In this story he knows. never shows the slightest bit of remorse. and keeps on doubling down on it with every interaction since
Sure it's not. I'm waiting for you to prove your interpretation. It should be very easy after all because you are referencing the true story and not my fantasy.
A few snippets that break down your arguments,
Good luck in advance.
Klaus being manipulated by his father through omission (assuming that Dietz indeed wanted to destroy the Aldermans and kill Marcus).
Father "What is that!?"
Klaus "N-nothing."
Father "Give that to me!!"
Klaus "But-"
Father "NOW!!!"
"He snatched it straight from my hands. My cure, the medicine Alice risked so much to get for me."
Father "Where did you get this!!!"
Klaus "F-from Alice.... She said it might help fix me!"
Father "Alice...."
Father "Haha...."
Father "HAHAHAHAHAHA!!!!"
"It was strange, strange to hear my always serious father, laugh. I don't think I had ever seen him that happy before, not around me. But what happened next was even stranger."
Klaus "F-Father?"
Father "Well done my son!! Well done!! I never even imagined that you, you of all people, would be the one to deliver this to me."
"For the first time in my life, my father praised me. After 14 years of being a disappointment, after 14 years of being a burden, I was finally useful to my father."
"It felt.... good, it felt so good. All I could think was: "
Klaus "(Is this what Alice tries so hard for? Is this why Alice always does her best?)"
Klaus "(To be strong, for the sake of your family...)"
Father
"If we trade him this, we're in!! No more bootlicking, no more scrounging for scraps at the Alderman table!"
Father "Son, do you think you can get some more?"
Klaus "Huh?"
Father "There's another type, a different formula that I need you to get for me!"
Klaus "Well..."
Father "If you can get that formula, I'll have everything that I need. I can have your body fixed and so much more."
Klaus "W-what!? You can do that?"
Father "Yes! No more coughing, no more sickness. You'll be healthy, you'll be strong. Stronger than anyone."
Klaus "(I'll be... strong?)"
Father "For the sake of our family, we need that formula Klaus. Can I count on you son?"
Klaus "I... Yes father. I won't let you down, I promise."
Father "That's my boy."
Klaus saying that Marcus was the aggressor.
Alice "Why not? We were good to you, to your family! We saved you!"
Klaus "It's not about that. We just... We want to stand on our own now. To stand strong."
Alice "Right, stand."
Alice "Stand over the corpses of my father and I."
Klaus "No!"
Alice "It's because of you that he's in the hospital! Your guys attacked us! Your guys shot him!"
Klaus "N-no. He just tried to stop us and..."
Klaus still being madly in love with Alice, indicating that he wanted to prove himself to her, adopting her reasons for fighting.
"It felt.... good, it felt so good. All I could think was: "
Klaus "(Is this what Alice tries so hard for? Is this why Alice always does her best?)"
Klaus "(To be strong, for the sake of your family...)"
--------
Klaus "Why can't you understand Alice!
It was for the sake of my family, just like you said!!"
Klaus "*cough* Alice! Alice wait!!!"
"Why? Why couldn't she understand. We just wanted to be strong..."
"I just wanted to be strong... For my family... and for you."
--------
Danica "Forget about her kid. I don't know who that little girl is, but humans like her are beneath us."
Klaus
"Not her. Not Alice."