That's a fair point and shows the bias in society even further.
This that are 'for men' or that men more commonly do tend to be more prestigious, better rewarded, treated more seriously.
This is true for things like hobbies as well as work / paid work.
When men do things that are usually done by women they get a lot of kudos and often rewarded better (phenomenon of men been under represented in eg nursing, primary school teaching but over represented in senior roles).
Roles which change from mainly male to female see a reduction in respect and pay (medicine is the usual example).
Also that different countries have diffetent ideas at what girls and boys are 'supposed' to like / do and the children follow suit, taking up and doing the things that are 'for' them even though it's opposite in other countries eg football (soccer) is 'for girls' in usa and, foget where could be Japan, maths is a girls subject.
So nature / nurture/ how much of each + of course things are used to preserve the status quo.
So 'women can't do engineering because of some moneys' comes out, but of course lots of women will be great at engineering and lots of men shit at it.