This line if anyone doesn’t know comes from Tony and Fury’s conversation during Age of Ultron. The conversation where Tony says that the vision Wanda gave him, is the future. He blames himself.
This is not just the end of the path the group started them on, Tony claims all responsibility. I started us on. This idea that Tony tries to push off the blame for his actions, is honestly baffling. Tony consistently accepts blame for other people’s actions.
Let’s go through some of the movies and see where Tony takes responsibility.
In Ironman 1 we see Tony Stark, talking with Yinsen in Afghanistan. He’s scaredd, confused, and in pain. Despite all of that, one of the first things he notices about his kidnappers, they have his weapon. Which he finds absolutely jarring because he only sells his weapons to the US military.
He is absolutely shocked that these terrorists have his weapons, because Obidiah was the one selling to them behind his back. However, he takes responsibility for his weapons getting in the wrong hands, and sets out to personally destroy every stockpile of weapons.
He took full responsibility for something that was not his fault.
What about Age of Ultron.
The entire movie in Captain America civil war, is Tony attempting to make up for what happened. Notice he again says my fault. He has taken every bit of blame, he doesn’t blame Wanda for what she did to him, or for what she did to help Ultron with his plan. He doesn’t blame Bruce for helping him study the scepter. He doesn’t blame Ultron because ultimately Ultron’s actions were his own, he was a sentient being. Tony takes all of the blame on his shoulders, and supports the accords as a way of preventing further tragedies like Ultron.
Tony consistently accepts blames for things he was only marginally connected to. Other people expect him to, and he gets blamed for the actions of others regularly.
This man blamed Tony Stark for the crimes Howard Stark committed against his father. Tony is expected to pay in blood for crimes that are not his own.
Or what about
Who after years of planning, and evil deeds blames Tony for all of it. A drunk celebrity said he would talk with him and then didn’t. I understand maybe Aldrich was devastated, and dealing with depression. However, his crimes are still his own, he still chose to commit them. He has had years to get a good therapist, he chose to develop a serum that kills people, and causes them to explode.
This is not Tony’s fault, this is Killain’s. He made the decision to be a villain.
Now let’s look at some of the other Avengers accepting responsibility for their actions.
Well, that doesn’t sound like accepting responsibility for unleashing the Hulk onto a city of innocent people, and completely disrupting Dr. Banner’s peace of mind. She has to have accepted blame at some point, Captain America wouldn’t let her get away with this type of thing, would he?
“She’s just a kid.” Oh, of course well at least he accepts responsibility for his own mistakes.
“Did you know?”
“I didn’t know it was him.”
“Don’t bullshit me Rogers, did you know?”
Well he admits that he hid the truth for years after having his own lie waved in his face, not exactly taking responsibility.
What about Clint, he’s well known for considering the consequences of his actions. Mr. Clint “They’re considered.” Barton.
Oh no wait here’s another example of someone breaking the law and then blaming Tony for their own crimes. Wow the Aldrich Killian parallel I never wanted to make with one of my favorite comic book characters.
Now, all of the original team Cap is guilty of refusing responsibility for their crimes. What about Natasha? While we haven’t seen much of her origin Story she is supposed to be known for clearing the red off her ledger, and while we never see her take blame for much in canon, I blame Marvel’s shitiness with female characters and screen time.
Or Bruce? Bruce is the only original Avenger we see taking blame for things other than Tony. He’ll take blame for any event the Hulk was involved in, that’s why he leaves at the end of AoU, because of Johannesburg. He still blames himself for breaking Harlem, despite the fight being necessary to protect people.
Tl:dr this idea that Tony never accepts responsibility is really baffling to me, because team Cap never seemed to accept responsibility for anything they did wrong. Whereas Tony is constantly accepting blame, and working to improve himself and the situation.