>> No, because we have judgement.

Oh right, I forgot that we all have a one, shared judgement and that material that is offensive to one person is equally offensive to everyone else.

>> any given conference has its own rules regarding inclusivity and anti-discrimination

It appears that in this case they did not have these rules, the article says that they failed to "establish clear guidelines for these submissions".

P.S. I find your comment extremely offensive, could you please remove it? Thanks.

Except we don't. There are no clearly defined rules of what exactly defines sexism outside of "referring to women in a a way that makes anyone anywhere feel uncomfortable." It's entirely subjective and based on community, culture and societal standards. It's a landmine with wheels. Even if you stand perfectly still, it could bump into your leg at any moment and, I don't know, annoy you to death with shrill platitudes about patriarchy.