Because women are not that good when it comes to business and technical things. It's an evolutionary thing. Men were taking risks by going for a hunts etc. and women stayed in a cave and protected their home/ children. It's still valid. Of course there is lot of women that will take risks and lot of men who won't, but not majority.
You do realise you are generalising even though you want to make it appear as if you are not. I personally know a group of crypto enthusiasts where the women are actually in majority. They have stated they won't expose themselves as women online though, because first of all in crypto gender does not matter and there is so much prejudice against them. The dude you are debating with may easily be a woman. Same as in online gaming, there are many women that won't reveal their gender because it simply does not matter and they don't have to listen to some sexist bullshit. Gender hardly matters anymore in most areas of human life except of course in family planning and some other.
I would agree. Even considering the fact that gender is irrelevant as long as you have a set of skills, qualifications etc, there is a certain prejudice which makes some female not reveal their gender. And if you can keep a conversation on the same level, who cares, right?