Steve looks incredulous in response. He isn't even angry at Tony. He's angry at all of it. He hates that he thinks Zola is right. He died for nothing. He's worth nothing if this is the world they have after all the sacrifices they made to bring peace to the world.
"No. My best friend still spent decades being tortured and used in the most disgusting way imaginable. My allies, my friends allowed a guy known for human experimentation onto their team which caused all this to happen in the first place so no I don't feel better, Tony. I'm never going to feel better."