No, why would this be something to try to avoid? Sexism and racism is a kind of cultural trait, I hope you realize that.

A culture may be selective on very different criteria. It can easily be blind to gender, race, age, religion, nation and many more, yet have certain very specific values. And letting people in who have the opposite values are toxic to that culture.

You can't have a culture that's "open to everything". It means you have no culture, you just adopt the zeitgeist unmodified. Everything goes. If this was the goal, this thread wouldn't exist.