The fact 'it was a joke' really isn't an excuse...I'd argue it actually makes it worse.
I also don't understand why they were only a problem because they were "sexist". The apps were parodying behavior that well... many men engage in -- which is something you can acknowledge regardless of your gender. The immaturity alone should have been grounds for exclusion. Calling them out specifically for sexism seems to be a little heavy handed.
Whoever doxed them was heavy-handed, but since I haven't seen any threat worse than "I will never work with them" apparently not that heavy-handed. There are consequences for performing your sexism for all the world to see.
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.