Frankly, I think the only thing that really would have made this exclusionary is if the gentleman speaking had his slide titled "Maven is like a girlfriend" as opposed to "Maven is like my girlfriend; in that case I would in complete agreement that he's making a bad generalization.
But the fact of the matter is that he's not honestly trying to generalize to demean women's characteristics and he's not trying to be sexist. Is he trying to get cheap laughs from the audience (specifically from people that have had girlfriends with similar characteristics)? Sure he is. But that is still different from him suggesting that all girls are like this.
To really get a feel of this, it's important to understand this in the context of other agents; as my above example mentions:
If he talked about his father and said he isn't exactly tech savvy, should we berate him for trying to suggesting that ALL people his father's age aren't 'smart' or 'adaptive' enough to get with the times? The audience could have several older folks who are programmers themselves; do you think they would get absolutely upset at this alleged generalization? They would most likely understand and relate to this because they have friends (or have heard of friends) their age that behave this way. And that's OK.
If he talked about his teenage daughter saying that she likes Lady Gaga and Snapchat, should we berate him for stereotyping ALL teenagers as pop-music loving kids who haven't explored other genres of music and reduce them to app-loving human beings? Seems like that's a very extreme deduction. If there were teenage girls sitting in the audience would they get upset at how he's generalizing their age-group? They would most likely understand that some girls are like that description and relate either through their own personal experience or friends that they have. Whether they fall in the same camp or not is irrelevant; they now know that the gentleman's kid is like that, and it's a story that will stick with them for the purposes of illustration. He's not subtly hating on all female teenagers, and I'd imagine that they understand that.
But no, when we talk about "women" in general, even if they're out significant other, all of a sudden saying anything with a non-positive connotation is remarkably radioactive. That seems like a double standard where we can comfortably mete out opinions and comments about people we PERSONALLY know (within a family, S.O. etc), but when we don't have something outrageously positive to say, we're better off excluding women from the discussion due to this paranoid fear of alienation that political correctness has brought on.