I've followed debates about feminism for two decades or so, and this opinion piece genre has been quite popular, for a very long time.
Indeed, when I researched earlier writings I found examples from the 1970s onward.
They get lots more publicity (and always did) than any piece that would say how feminism has helped so many women live more equal lives, and how much more needs to be done to improve the lives of most women on this planet.
Funny, that difference, in who gets the publicity.
More generally, the big invisible elephant here is that most of the working world is still arranged on the pattern of all workers having someone at home taking care of children, the ailing family members, and the elderly, without formally getting paid for that work. Career paths are not based on the assumption that the typical worker would have to take some time off for having children or that the typical worker would be responsible for hands-on care of those children.
So the bitterness really is misdirected: It should be aimed at the way the labour markets are still organised and how temporary absences from work are punished etc.
The second wave feminists, at least some of them, tried to address this mismatch between what is expected of workers and what is expected of women, but though they made headway in other aspects of work they didn't get far enough on addressing this issue.
I'm also thinking of how odd many views about feminism seem to be. It's a bit as if we are blaming the person diagnosing something for the presence of an illness or blaming a rather poorly funded and not terribly powerful social movement as if it is running the global economic system. Not to even get into the complex strands of feminism and the clear current differences between different schools of feminist thought (some without any, to be honest).