I hate to say it, but there's something more fundamental going on. Take a look at open source for example - Very low barrier to entry, no one is getting paid, and there's no interview. I ran a project that had over 100 contributors, and of the ~20 that I got to know personally, there were 2 women, only one was cis. Either young girls are still be pushed away from the "hustle" culture, or different genders tend to care about different things.

An even more obvious example might be Uber drivers. Anyone can take Uber as a side income, yet there's so few women who do. How can you explain this phenomenon by anything other than "the way girls are raised" and "biological differences"?

How is "free volunteer work" a proxy for "hustler culture"?

Also, Uber driving is not side income, it is main income low pay job for overwhelming majority of the drivers.