Women generally have different interests than men, and different cultures generally have different interests and expectations than others. This is extremely well documented, as is the fact that people have a harder time being comfortable and fitting in around others who are unlike them or don't share their interests.

> wait does this mean Valve is white males-oriented culture

If Valve mostly hires white males, then either you're expecting the employees to not socialize at all (leading to no culture), which is sociopathic, or yes, that's exactly what you would expect.

You're objecting to reality and truth because it offends you, for some reason? There's literally nothing objectionable with any of the above. Being uncomfortable implies zero moral wrongdoing. You should do some reflection and/or research.