Yes, actually, when women are not doing things, historically that's usually men's fault. Like women not having jobs, women not having bank accounts, women not having a higher education...
I'm not saying that's the case here, but society and patriarchy are very complex. Women, and yes men, are not 100% autonomous, and are, in fact, influenced by the society and socialization they received. It's not as simple as "women should be doctors", or whatever. We also need things like representation, outreach, what have you.
If you substitute, say, "being president" for "designing programming languages", then the answer is a pretty obvious yes.
After the US revolution, some places in the US allowed voting for men and women of all races. White men quickly adjusted things so that only white men could vote, deploying violence where necessary, and building a system that excluded other people from the economic resources, education, and social power necessary to change things. It is only in recent decades we have started to undo that, and by no significant measure have we succeeded.
And it's not just "being president"; it's provably true about many, many areas. Some men set things up to exclude women, and then the rest of the men went along with it. One of the ways we go along with it is by accepting a disproportionate share of the power and not using it to fix the system that gave it to us.
Is "designing programming languages" one of those areas? I don't know enough about the topic to say. But I've talked enough women in software generally to know those same patterns apply to software development, an so I'd be surprised to find that "designing programming languages" is somehow an amazing egalitarian exception to the industry norm.
In the last paragraph, I did specifically answer the question. I even started that paragraph with the question so that people wouldn't miss it. But I'm not obliged to directly answer questions with wrong assumptions. If you think people are, tell me whether you've finally stopped beating your wife.
Being the president of the USA requires other people’s approval. Designing a programming language does not. What specifically is preventing a woman from designing a programming language right now?