Those parts detract from an otherwise clever story. Among the many reasons women might be uncomfortable in software -- dudes who joke about killing them.
I can remember being made to feel uncomfortable and quite unwelcome upon witnessing a renowned female* developer and entrepreneur joke about killing a group of men who had offered advice on suitable materials for makeshift bottle openers.
* Or "chick" shudder, if we're accepting that "dude" is holding the appropriate tone for this conversation.