Oops on their part. Bet they wish this never came to light.
Whatever the case, it does not seem like a happy place to work. Happy employee's put up with each others oddities, or in this case sexism. I've been in a few jobs where all kinds of otherwise intolerable activities occur. The offenders are generally likeable personalities who politely apologize in their own way. They help somehow to make others lives better or just invite them to happy hour, drinks paid. But at the end of the day, it's all forgiven.
One women offended accepted some bathroom work done in reconciliation, as example. She was OK with the quality, and the two never had a problem again with the other person.
It's the rare case where people hate their job and other people around them so much that this gets media attention. LOL.
Essentially - Riot Games - not a fun place to work.