Actually to be honest, I think it might actually validate the point of the article: women are doing it as a hobby. My gf is a teacher and my impression is that it is very poorly paid compared to the effort that goes into it (in Germany, mind you). Men simply can not afford to strive for such a poorly paid career.

That is my opinion - I won't be surprised if it won't be very popular, but here it goes.

There might be some gender bias, too (women+children), but I wouldn't be surprised if the economic factors are the main aspect.