If her problem with it was that some random other guy openly finding some random other girl attractive in her workplace "makes her feel unsafe", then that would be highly hypocritical, as she admits she was dating a coworker and that other coworkers knew this, which can only encourage others to think it's OK to make romantic advances to coworkers.
I mean, you can't have it both ways. If you think men and women should always without exception be only cold and businesslike towards each other in your workplace, then don't date a coworker. Isn't that obvious?
I believe the article mentions how she started dating the coworker before joining Github.
Even if she started dating him after she joined, you need to take the whole thing in context. The founder's wife is attempting to inject herself into their relationship, and a guy hits on her and punishes her for rejecting him. In context, the hula hooping episode can easily be a trigger for the allegedly sexist culture at GitHub.
By the way they kept saying partner I was under the impression she was dating a woman. In which case she could theoretically hate males looking at women and still date a woman on the team.
I mean, you can't have it both ways. If you think men and women should always without exception be only cold and businesslike towards each other in your workplace, then don't date a coworker. Isn't that obvious?