As a man I would say to a man who believes TWAW (fullstop, end of discussion unless you want to be insulted...) that they have no right to compromise the rights of women - if women want to give up their rights that's their business. As a man one's only right is to stand shoulder to shoulder with women.
To a woman...
(1) When black people fought for equality, when women fought for the vote, they were saying "we want what everyone else has". What a trans woman wants is a different and harder to deliver request - a request to be removed from one box and placed into another box. That is a much harder request for society to deliver, especially given that they are entering the box of a relatively underprivileged group. Trans rights are inherently more complex and harder to deliver than gay rights or black rights and the trans community should recognize that publicly.
(2) Sex is a biological fact. Do you think all issues are 100% relevant to gender and 0% relevant to sex, or do you think that some issues are specific to the female sex?
(3) Do you think that the relatively lack of trans women identifying as butch / masculine women suggests that trans women tend to be attracted to outdated stereotypes and not the reality of womanhood?
(4) Do you see an irony that one of the biggest issues seems to be trans women wishing to access female only changing rooms and toilets in order to be safe from men, when feeling unsafe due to men is an inherent aspect of being a woman, and can be the end result of male bodies in female spaces?
(5) Do you realize how personal most trans women's opinion of womanhood is, and how little it has to do with any sort of shared feelings of sisterhood with other women?
(6) Why do you think that trans women are a problem for women in a way that trans men aren't a problem for men? Do you think this raises issues that need consideration?
(7) Do you think that women have a right to spaces (online or in real life, and especially within academia) with which to discuss the above issues without being accused of bigotry or being physically threatened by men and other people with male bodies? Do you agree that there is a problem, a big problem, if the trans-orthodoxy sees even raising any of these things as the height of bigotry, basically equivalent to believing that apartheid south africa was morally perfect.