Maybe it's a matter of interpretation but in that sort of context I don't interpret it as rudeness because she's not really arguing with the host. The host is j

Maybe it's a matter of interpretation but in that sort of context I don't interpret it as rudeness because she's not really arguing with the host. The host is just setting up questions so the listeners can understand her views. When she says "that's a very sloppy look at history", she is actually arguing with the other physicists that Roberts has set up in his question and is merely expressing her opinion on those views. You can't really be rude to views or ideas, only to people, so that matters. Now if she had been debating with someone who disagreed with her, and then she said "You're looking at history very sloppily" that might be rude, but that isn't the case here. Also this is a storm in a teacup compared to the other things she does and says. Hossenfelder pretty routinely names specific physicists and states openly that they're defrauding the public by lying about their research in order to gain grant funding. She states this politely but so what, it's obviously far more severe of an attack than using the word sloppy. If you want to pick on her style you'd really want to talk about that, but it's hard to abstractly criticize her for that because it immediately goes in the direction of whether she's telling the truth or not.