Of course feminism is still necessary. But publicly declaring you're a feminist goes very much against female socialization, so I think it's entirely understandable that many women either never explore the issue or hold feminist views but only express them when it feels safe to do so.
Also, modern third wave feminism, with its bizarre beliefs - that any choice a woman makes is empowering, that feminism must centre men and transwomen, that what are called cis women are comfortable with femininity - is, I'm sure, damaging the image of feminism.
I belong to a gender critical feminist group, and of course we're all second wavers. We very frequently get new members, who post after often lurking for some time, absorbing what is said, burnt out with the kind of crap sites like Everyday Feminism churn out, who are so relieved to have found feminism that makes sense, is a coherent philosophy. The many disadvantages of third wave feminism stem from its basis in pomo and its subsequent lack of class analysis, plus the extension of the movement to concern itself with umpteen other groups, thus diluting its strength to no more than a taste in the water. It's not actually feminism at all, and has nothing to offer women.
So yes, we need feminism, the robust thinking of the second wave.