The Telegraph is a Tory paper which publishes a bunch of conservative commentators who often don't agree with each other. Yes obviously that commentator is hoping that this campaign might get the Tories a few votes.
It isn't going to change the result over much of the UK. We have had multiple elections since 2018 and the existence of women issue hasn't been a decisive element in any of them.
You are pretending that British politics is just about Tory vs LAbour. It isn't.
The reality is NO DEBATE is over. If our MPs believe in gender over sex than voters deserve to know.
Secondly . It is about the battle inside political parties too.
Getting every MP to state their position is very helpful to gender crit rebels inside Labour, Lib Dems, SNP, etc.
Thirdly this campaign looks very different if you consider Scotland, Wales and of course Northern Ireland.
There is one nation where gender will b a defining issue and that is Scotland. Gender is part of a bunch of factors which badly damaged the SNP.
Labour are going to gain seats in Scotland because they are seen as more moderate [rightly or wrongly] than the SNP on gender and other things. If Labour are gaining votes over gender they NEED to explain their position more clearly.
Also you are ignoring that Labour already rule a country - Wales where they are still insisting women don't exist. If we can make Welsh Labour look absurd over this campaign all the better.
Especially as Wales is the only place where an elected Trans MP a Tory in Bridgend is defending his seat.