No, it's not about offending people. It's about consequences.
Think about the statistics for adolescent suicide. Think about the mental disorders that young people are increasingly suffering from, including self-harming, eating disorders such as bulimia and anorexia; there's very little disagreement (is there?) that a lot of misery is caused to young girls in particular feeling that they have to live up to unrealistic standards of physical appearance.
Increasingly it's also about unrealistic sexual aspirations too, with girls (maybe some boys too, butI'd bet it's mainly girls) being made to believe that all sorts of things are expected of them that they may not actually want to do, or be ready to even think about doing. Obviously not all suicides and other awful problems are due to this sort of pressure , but some are, and that is bad, and it some of it could be prevented.
I'm not suggesting Clucas knew or thought about any of this but I'm glad that his club don't take the attitude that ignorance makes things OK. Ignorance may occasionally be an excuse, depending on circumstances, but it doesn't mean it should be treated as normal responsible behaviour, or that we should make excuses for it.