I think it's fundamental difference in personalities. Some also want really heavy age limits of software and video. Some also want to censor the internet and some do not.
I'm actually tempted to name personal projects with similar names as the 'bro' project, not because I would actually endorse the culture, but because I dislike those that come barging in saying that someone might get offended even more.
I get pretty much as annoyed of offended persons as I do with those that would seriously dismiss anyone based on their gender.