Besides programming suddenly becoming more of a "bro" thing than before, due to the dotcom gold rush, there was sexism that hit close to Java.
Kim Polese was business leadership for Java, but there were sexist slights in the field, like, IIRC, an article in the business press suggesting that she was able to get lunch with anyone because (the article said) she was an attractive woman. Nevermind that Java obviously had monumental promise at the time, both for software development in general, and for the future of the skyrocketing Web, and Polese was arguably the person to network with, if you could.
Here's one quick, incomplete introduction to the environment at the time: https://www.telegraph.co.uk/technology/people-in-technology/...
When that started happening, 0xCAFEBABE felt like something one might've chosen to do differently, had one known all the overt sexism that would be going on, including targeted at one's colleague.