The fuss is because many women want to dismantle the patriarchy because many women are routinely subjected to violence from men as biologically they lack physical equality with men, and because the unpaid work women tend to end up spending a lot of their time doing - especially the domestic, elderly and childcare work - is not valued by society so they may be treated as 2nd class citizens and their issues ignored. Therefore, if the patriarchy exists due to biological differences it becomes harder to dismantle.
Also, if a lot of women's time is spent on unpaid work, their specialist skill-set and economic power and financial independence is compromised, which could then put them at a disadvantage to men if specialists and leaders are more valued and you need money to access safety, security, goods and services and political and social power. This would leave women in a very vulnerable position and often exploited. Women were hoping to compensate for their lack of physical strength by having access to financial power to protect themselves. Hence, the more gender inequality that exists in society, the more women try to access financial power by choosing work that is lucrative, which would be traditionally male specialist or leadership roles.
Therefore, saying that the patriarchy is rooted in biological preferences causes some feminists to worry that this justifies the view that traditional female roles have intrinsically less value than traditional male roles, which could then justify women being treated as lesser than men.
Women have been working for millennia...in the fields, as flower girls, selling vegetables, managing eateries, doing laundry etc. What's the big deal about women working? Nothing new about women working IMO. But this was largely for economic reasons. They faced dangers and sexual exploitation just to make both ends meet. Women who could afford it always stayed at home...partly to manage the home, elderly and children and partly because it was safer. Staying at home was a luxury in earlier times.
Women can today afford to work outside mainly because technology is helping them. Electricity, transport, cell phones, eateries, toilets, modern police and security.....and so many other facilities today make it safe and convenient for women to work. Also, no wild animals, bandits or regular fighting between rival groups and communities. No soldiers and local chieftains carrying away women they fancied. Infections and illnesses which were common in earlier times are now largely curable.
Patriarchy had a purpose and it was
not meant 'to exploit women'. It was meant to protect them and the children. If conditions changed back to what they were about 100 or 200 years ago....most women would choose to stay at home even today.
It is wrong of feminists to keep bashing men as though their main purpose in life was to exploit women and keep them controlled. Most men loved their women and did everything to protect and care for their families.
Some scoundrels did exploit women, no doubt. But they exploited all weak people.....and still do.