It's not as simple as that, though.
Voting intention doesn't help Labour: they need that translated into actual votes, and they need those votes distributed across enough constituencies. In the twentieth century, Labour was an alliance between working class union members and left-leaning metropolitan professionals. Over the course of this century, it has shed much of its traditional working class support - hence the loss of the Red Wall - and its vote is becoming more and more concentrated into a few areas. Also, its vote skews young, and under 25s are much less likely to vote than older age groups.
Labour doesn't just need to convince 40ish % of voters (depending on how well smaller parties do)- it needs to win the most constituencies. That is much, much harder, given the current demographics of its support. You see this starkly in the 2019 GE results - there was only an 11.5% vote share difference between the Tories and Labour, but that translated into the Tories having 25% more MPs. The Tories got 44% of the total vote, but they won 56% of all seats in Parliament, whereas Labour got 32% of the total vote and only 31% of seats. Each percentage of the total vote was essentially worth a third more to Tories - in terms of how it translated into seats - than to Labour.
YouGov say Labour have a 19% lead over the Tories as of today, which sounds commanding. But, if we see similar dynamics in the next GE as 2019, this is only a 13% lead in real terms. And that's voting intention. Labour's big other problem is that their voters are disproportionately young, and so less likely to vote, whereas Tory voters are disproportionately old and vote reliably,.
You are also assuming that women's rights issues only influence voters who consciously prioritise women's rights. But Labour's stance also speaks to wider issues of trust and competence. Every time a Labour MP mangles saying what a woman is, or claims that babies are not born with a sex, the public take note.
I think Labour will be the biggest party in the next Parliament, but I am not convinced that they will have an absolute majority. And that is a worry. Many Scots believe that one of the reasons that Nicola Sturgeon got into such dire straits with the GRR Bill was that she had done a deal with the Greens. Given the extreme TWAW stance of the LibDems, the prospect of Lib-Lab voting block is alarming.