Someone else already addressed the issues with your "woman = less technical" implication, but I think the meat of your topic is actually going in the right dire

Someone else already addressed the issues with your "woman = less technical" implication, but I think the meat of your topic is actually going in the right direction. People who are good at socializing know how to have conversations with anyone of any background. Many know when people are being left out and will go out of their way to shift the topic or make it more inclusive to the person being left out. If you've ever been at a party where you didn't know anyone, and someone who you didn't know before introduces themselves and is able to make you feel more comfortable being there, then you probably know what a relief these natural socializers can be. Unfortunately, many engineers (myself included) are not natural socializers or otherwise well-practiced in the "manners" required for creating positive social situations. Folks like me are much more interested in topics I know a lot about and have strong opinions on, so it can be hard to break away once one of those conversations start, even if I know people are being excluded by having this conversation. I think the important thing here is that socialization should be organic, and if one person is obviously uncomfortable or left out, the polite thing for anyone to do is to bring them in somehow. Every person on the team should strive to improve their ability to make people from different backgrounds feel included, and you're right in saying it's a skill that can be improved through work. This applies equally to women, minorities, immigrants, new people, anyone who doesn't feel like an "in-group" in a particular situation.