Selective reporting/sourcing. You can replace "anti-feminist" with "radical feminist" and the result describes an equally sizeable segment of the Chinese internet. Take e'zu ("the goose group") on Douban for example, a discussion board that played crucial roles in taking down Kris Wu (a feminist cause) and Zhang Zhe Han (a nationalist cause). Its members by and large hate men, foreigners, Muslims and Western liberal ideas other than feminism. A couple weeks ago there was a discussion thread about whether pregnant women have a moral duty to abort male fetuses to protect the next generation of women from oppression. I sometimes think their ideal vision for the world is where only Han Chinese women exist.
Well, Chinese feminists are known to have over-the-top ideas, such demanding high marriage payments toward fellow Asian men, while demanding nothing from non-Asians. Also, they really over-react to the three child policy, as if the society as a whole should return to one-child policy in order to save their jobs from taken by young men.
Yet, the reason why such radical feminism has a market in China is because women used to own "half of the sky" during the Mao era (one of the few things Mao did humanely was the liberation of women from the KMT's patriarchy, when powerful men could have many qipao-wearing wives as *** slaves). Women were encourage to outcompete and out perform men for the same job positions and military posts. However, with the introduction of market economy in the 1980s, child-bearing really became an issue for women to compete fairly in the job field. This was particularly true following the 2006 Labour contract law, which required firms to continue paying salaries to women during maternity leaves. The the three-child policy right now, private firms (not state-owned) are further discouraged from hiring young women. Thus, the issue now is whether the government is willing to shared a significant portion of the maternity leave burdens with private firms (thus, encouraging both women to have more kids and firms not to discriminate against young female candidates).