I have the science one. I mean DD does I made a conscious effort to drop female scientists, world leaders and everyday women into conversation as much as possible. Now at 6, we were talking about something going to Court and about the judge and she said, "she probably..." She assumes a judge is female.
If they are using the Lego for imagination play and all the scientists are female, they imagine themselves as a female scientist. The people complaining are welcome to use all my male Lego figures if they are sad and need to play.