I know people here won't like to hear this, but it's women who pay the bills in mainstream media. There are a few male dominated verticals. Sports for instance. But for the most part, mainstream media has to be friendly to its consumers, which is mostly women.

Again, there are male dominated niches, and if you consume media in those niches you do note a decided male bias to the content.

More likely its due to the fact that people writing about dating are typically women...

Because women control dating. Women decide what they want and men will go to whatever place and do whatever thing is required to have sex with them.

Because in online dating women are the goods that need to be advertised. Men are customers