It's difficult to see how key issues facing society will ever be resolved whilst there are people who claim to care/be interested in an issue but fail to engage in it in good faith.
Essentially, there are thousands of different ways to classify people (hair colour, place of birth, vegetarian/meat eating etc.). People can be classified as being one of two sexes (even those with DSDs/intersex conditions). They can also be classified by their gender identity (or which there are many, and some people don't have one).
Views about when and why we may or may not want to apply these classifications differ. Some people don't want to be classified a certain way (this applies to both sex and gender identity). Some try and address this by arguing the case, others simply change the definition of the classification to try and swerve explanation/justification - which is often accompanied by a refusal to discuss the issues at hand or a suggestion that trans people exist and this can't be denied. Trans people do exist and, like everyone, can be classified according to their sex or their gender identity.
I get that it is difficult, even distressing, for trans people to have to face the facts that their natal sex matters in some contexts, even though they don't want it to.
When doing the grocery shop, or participating in an open book club, males and females should be welcomed, and there should not be different expectations about how they present themselves (their clothes, make up etc.) as this is irrelevant to the task at hand. When providing a changing room, or a support group for females who have been raped, entry should be determined by natal sex, not identity. People suggesting this is hateful are conflating 'upsetting for some' with hate. In doing so, they are causing more, and avoidable, upset to trans people.
Sex- segregated provision is both inclusive and excluding. Creating a female only category in sport is inclusive as it enables women to participate in meaningful competition and without it men would always
win. It is also excluding as it excludes males, which can be upsetting for some. To say this is hateful is absurd. To suggest that discussion about this need to be hidden away in a corner of the site as they are so disturbing is ridiculous, and I would argue, causes more harm than good.
If people who think posters are hate fuelled when they challenge or question the appropriateness of a natal male (with or without a functioning penis) having a passport which states they are female, they need to look again at the reasons being provided. The majority of objections are not based on hatred. Many do suggest that the upset caused to people with trans identities doesn't justify eradicating classification by natal sex in specific instances. They see this upset as avoidable (the ends justifies the means), they do not want to 'eradicate trans people', they are willing to afford trans people equal respect as they go about their daily lives, and want them to have the same rights as everyone else.
There are solutions that would allow trans people to fully participate in society on an equal footing as everyone else. However, activists are harming their cause by holding out for gender identity being a trump card that places some natal males within the category natal female.