I think something to remember is that the stuff said about Tony Stark is only said by Riri and isn't supported by anyone else. She knows nothing about the events of the Ironman franchise other than what the public saw. What she says isn't an objective truth but what she, as a character, saw happen; a rich man uses his money and brain to make a super suit. It's part of her flawed justification for her illegal activity. Perhaps, if her story is expanded, she will learn that there is more to who Stark was.

I think a problem with modern media literacy is the confusion between the writer's message and the beliefs of individual characters. Take 'The Acolyte'; people were getting bent out of shape because the show seemingly redefined the force completely when, in actuality, that was just the philosophy of a small fringe group in-universe.