It's the same effect, I think, that has caused your comment to receive a number of upvotes but very little (i.e. zero at the time of writing) agreement in the child comments.

Personally, I see where you're coming from. I learn more about how sexism manifests itself in the tech industry every week, it seems. Even with good intentions and a lot of conscious thought about the issue, it doesn't seem extremely unlikely that some action I previously considered harmless could be taken the wrong way.